.NET Framework version history

none Needs cleanup per NOTCHANGELOG December 2023 October 2026 Dot-Net 1 SVG.svg 252 0 0 252 280 0 10 12 #11404A .NET Store APIs center 12 bold Segoe UI #ffcccee 118 12 #11404A Async model center 12 bold Segoe UI #ffcccee 16 54 #3C360B Parallel Extensions#Parallel LINQ Parallel LINQ center 12 bold Segoe UI #ffcccee blue 144 54 #3C360B Parallel Extensions#Task_Parallel_Library TPL center 12 bold Segoe UI #ffcccee white 40 96 #2A1540 Language Integrated Query LINQ center 12 bold Segoe UI #ffcccee blue 148 96 #2A1540 Entity_Framework EF center 12 bold Segoe UI #ffcccee blue 16 136 #41250E Windows Presentation Foundation WPF center 12 bold Segoe UI #ffcccee blue 68 136 #41250E Windows Communication Foundation WCF center 12 bold Segoe UI #ffcccee blue 122 136 #41250E Windows Workflow Foundation WF center 12 bold Segoe UI #ffcccee blue 170 136 #41250E Windows CardSpace WCS center 12 bold Segoe UI #ffcccee blue 9 178 #1A2B0B Windows Forms WinForms center 12 bold Segoe UI #ffcccee 81 178 #1A2B0B ASP.NET ASP.NET center 12 bold Segoe UI #ffcccee 148 178 #1A2B0B ADO.NET ADO.NET center 12 bold Segoe UI #ffcccee 36 212 #1A2B0B Framework Class Library Framework Class Library center 12 bold Segoe UI #ffcccee 26 250 #0E2237 Common Language Runtime Common Language Runtime center 12 bold Segoe UI #ffcccee The .NET Framework stack Microsoft started development on the .NET Framework in the late 1990s originally under the name of Next Generation Windows Services (NGWS). By late 2001 the first beta versions of .NET Framework 1.0 were released.http://ben.skyiv.com/clrversion.html Framework Versions https://web.archive.org/web/20080504160116/http://ben.skyiv.com/clrversion.html 4 May 2008 dead 19 December 2010 The first version of .NET Framework was released on 13 February 2002, bringing managed code to Windows NT 4.0, 98, 2000, Me and XP. Since its initial release, Microsoft has issued nine subsequent upgrades to the .NET Framework, with seven coinciding with new releases of Visual Studio. Notably, versions 2.0 and 4.0 introduced significant updates to Common Language Runtime (CLR), enhancing performance, security, and language interoperability. In cases where the CLR version remains unchanged, newer framework releases typically replace previous ones through in-place updates. The .NET Framework family also includes two versions for mobile or embedded device use. A reduced version of the framework, the .NET Compact Framework, is available on Windows CE platforms, including Windows Mobile devices such as smartphones. Additionally, the .NET Micro Framework is targeted at severely resource-constrained devices. .NET Framework 4.8 was announced as the last major version of .NET Framework, with future work going into the rewritten and cross-platform .NET Core platform (later, simply .NET), which shipped as .NET 5 in November 2020.Richard Lander 2020-11-10 Announcing .NET 5.0 https://devblogs.microsoft.com/dotnet/announcing-net-5-0/ 2021-01-04 .NET Blog 18 February 2021 https://web.archive.org/web/20210218110932/https://devblogs.microsoft.com/dotnet/announcing-net-5-0/ live However, .NET Framework 4.8.1 was released in August 2022.https://devblogs.microsoft.com/dotnet/announcing-dotnet-framework-481/ Announcing .NET Framework 4.8.1 https://web.archive.org/web/20220824141107/https://devblogs.microsoft.com/dotnet/announcing-dotnet-framework-481/ 2022-08-24 2022-08-11 en-US live Overview +Overview of .NET Framework release history.NET Framework System Requirements https://docs.microsoft.com/en-us/previous-versions/visualstudio/visual-studio-2008/8z6watww(v=vs.90) MSDN Microsoft 28 November 2016 19 September 2018 https://web.archive.org/web/20180919205323/https://docs.microsoft.com/en-us/previous-versions/visualstudio/visual-studio-2008/8z6watww(v=vs.90) live.NET Framework Versions and Dependencies https://docs.microsoft.com/en-us/dotnet/framework/migration-guide/versions-and-dependencies MSDN Microsoft 26 August 2019 3 September 2022 https://web.archive.org/web/20220903043259/https://docs.microsoft.com/en-US/dotnet/framework/migration-guide/versions-and-dependencies liveStebner Aaron Mailbag: What version of the .NET Framework is included in what version of the OS? https://docs.microsoft.com/en-us/archive/blogs/astebner/mailbag-what-version-of-the-net-framework-is-included-in-what-version-of-the-os Aaron Stebner's WebLog Microsoft 14 March 2007 18 January 2020 24 January 2020 https://web.archive.org/web/20200124192133/https://docs.microsoft.com/en-us/archive/blogs/astebner/mailbag-what-version-of-the-net-framework-is-included-in-what-version-of-the-os liveInstall the .NET Framework on Windows 10 and Windows Server 2016 https://docs.microsoft.com/en-us/dotnet/framework/install/on-windows-10 Microsoft 20 December 2017 24 January 2018 6 December 2017 https://web.archive.org/web/20171206211349/https://docs.microsoft.com/en-us/dotnet/framework/install/on-windows-10 liveVersionCLRReleasedateSupportendedLifecycle FAQ—.NET Framework https://learn.microsoft.com/en-us/lifecycle/faq/dotnet-framework learn.microsoft.com Microsofthttps://learn.microsoft.com/en-us/lifecycle/products/microsoft-net-framework Microsoft .NET Framework Microsoft 14 January 2023 14 January 2023 https://web.archive.org/web/20230114104134/https://learn.microsoft.com/en-us/lifecycle/products/microsoft-net-framework liveVisual StudioIncluded inCan be installed onReplacesWindowsWindows ServerWindowsWindows Server1.01.02002-01-15Microsoft Releases .NET Framework, Visual Studio .NET https://rcpmag.com/articles/2002/01/16/microsoft-releases-net-framework-visual-studio-net.aspx News Redmond Channel Partner 16 January 2002 30 December 2021 30 December 2021 https://web.archive.org/web/20211230070848/https://rcpmag.com/articles/2002/01/16/microsoft-releases-net-framework-visual-studio-net.aspx liveMicrosoft .NET Framework Software Development Kit https://www.neowin.net/news/microsoft-net-framework-software-development-kit/ News Neowin 17 January 2002 30 December 2021 30 December 2021 https://web.archive.org/web/20211230070904/https://www.neowin.net/news/microsoft-net-framework-software-development-kit/ live Visual Studio .NET 2002NT 4.0 SP6a, 98, 98SE, Me, 2000, XPNT 4.0 SP6a, 2000, 20031.0 SP1↑2002-03-19Lots of .Net updates https://www.neowin.net/news/lots-of-net-updates/ News Neowin 20 March 2002 30 December 2021 1 July 2024 https://web.archive.org/web/20240701121701/https://www.neowin.net/news/lots-of-net-updates/ live ↑↑↑1.0 SP2↑2002-08-07.NET Framework Service SP2 https://www.neowin.net/news/net-framework-service-sp2/ News Neowin 8 August 2002 30 December 2021 30 December 2021 https://web.archive.org/web/20211230070847/https://www.neowin.net/news/net-framework-service-sp2/ live XP SP1a1 a none↑↑↑1.0 SP3↑2004-08-302009-07-14 ↑↑↑1.11.12003-04-09Microsoft .NET Framework Version 1.1 https://www.neowin.net/news/microsoftreg-net-framework-version-11/ News Neowin 9 April 2003 30 December 2021 30 December 2021 https://web.archive.org/web/20211230070902/https://www.neowin.net/news/microsoftreg-net-framework-version-11/ live Visual Studio .NET 20032003 (x86)NT 4.0 SP6a, 98, 98SE, Me, 2000, XP, VistaNT 4.0 SP6a, 2000, 2003 (x64), 20081.0.NET Framework Developer Center – Frequently Asked Questions http://msdn.microsoft.com/en-us/netframework/Aa497323.aspx https://web.archive.org/web/20120724012426/http://msdn.microsoft.com/en-us/netframework/aa497323.aspx 24 July 20121.1 SP1↑2004-08-301.1 SP1, 1.0 SP3 released https://docs.microsoft.com/en-us/archive/blogs/ericgu/1-1-sp1-1-0-sp3-released Eric Gunnerson's Compendium Microsoft 30 August 2004 18 January 2020 7 March 2020 https://web.archive.org/web/20200307175334/https://docs.microsoft.com/en-us/archive/blogs/ericgu/1-1-sp1-1-0-sp3-released live2013-10-08 XP SP2, SP3b1 b none2003 SP1, SP2 (x86)↑↑↑2.02.02005-10-27Final official version of .NET Framework 2.0 is available for download! https://docs.microsoft.com/en-us/archive/blogs/astebner/final-official-version-of-net-framework-2-0-is-available-for-download Aaron Stebner's WebLog Microsoft 27 October 2005 18 January 2020 4 March 2020 https://web.archive.org/web/20200304101737/https://docs.microsoft.com/en-us/archive/blogs/astebner/final-official-version-of-net-framework-2-0-is-available-for-download live Visual Studio 20052003 R298, 98SE, Me, 2000 SP3, XP SP22000 SP3, 20032.0 SP1↑2007-11-19 20082000 SP4, XP SP22000 SP4, 2003 SP1↑2.0 SP2↑2008-08-112011-07-12 2008 SP2, 2008 R2↑↑↑3.02.02006-11-06The final version of the .NET Framework 3.0 is now available for download https://docs.microsoft.com/en-us/archive/blogs/astebner/the-final-version-of-the-net-framework-3-0-is-now-available-for-download Aaron Stebner's WebLog Microsoft 7 November 2006 18 January 2020 7 March 2020 https://web.archive.org/web/20200307194852/https://docs.microsoft.com/en-us/archive/blogs/astebner/the-final-version-of-the-net-framework-3-0-is-now-available-for-download live Visual Studio 2008VistaXP SP22003 SP12.03.0 SP1↑2007-11-19 Vista SP12008c1 c none↑↑↑3.0 SP2↑2008-08-112011-07-12 Vista SP22008 SP2,c1 c none 2008 R2c1 c none↑↑↑3.52.02007-11-19Final release of Visual Studio 2008 and .NET Framework 3.5 now available https://docs.microsoft.com/en-us/archive/blogs/astebner/final-release-of-visual-studio-2008-and-net-framework-3-5-now-available Aaron Stebner's WebLog Microsoft 19 November 2007 18 January 2020 8 March 2020 https://web.archive.org/web/20200308015529/https://docs.microsoft.com/en-us/archive/blogs/astebner/final-release-of-visual-studio-2008-and-net-framework-3-5-now-available live Visual Studio 2008XP SP2, Vista2003 SP1, 20082.0, 3.03.5 SP1↑2008-08-11.NET Framework 3.5 SP1 and Visual Studio 2008 SP1 download and troubleshooting links https://docs.microsoft.com/en-us/archive/blogs/astebner/net-framework-3-5-sp1-and-visual-studio-2008-sp1-download-and-troubleshooting-links Aaron Stebner's WebLog Microsoft 11 August 2008 18 January 2020 5 March 2020 https://web.archive.org/web/20200305212305/https://docs.microsoft.com/en-us/archive/blogs/astebner/net-framework-3-5-sp1-and-visual-studio-2008-sp1-download-and-troubleshooting-links live2029-01-09d1 d noneVisual Studio 2008 SP17, 8,c1 c none 8.1,c1 c none 10,c1 c none 11c1 c none2008 R2,c1 c none 2012,c1 c none 2012 R2,c1 c none v1709-v20H2,c1 c none 2016-2022,c1 c none v23H2,c1 c none 2025c1 c none↑↑↑4.042010-04-12Final versions of Visual Studio 2010 and the .NET Framework 4 are now available https://docs.microsoft.com/en-us/archive/blogs/astebner/final-versions-of-visual-studio-2010-and-the-net-framework-4-are-now-available Aaron Stebner's WebLog Microsoft 13 April 2010 18 January 2020 28 February 2020 https://web.archive.org/web/20200228044537/https://docs.microsoft.com/en-us/archive/blogs/astebner/final-versions-of-visual-studio-2010-and-the-net-framework-4-are-now-available live2016-01-12Visual Studio 2010XP SP3, Vista SP1, 72003 SP2, 2008, 2008 R24.5↑2012-08-15Announcing the release of .NET Framework 4.5 RTM - Product and Source Code https://devblogs.microsoft.com/dotnet/announcing-the-release-of-net-framework-4-5-rtm-product-and-source-code/ .NET Blog Microsoft 15 August 2012 9 November 2019 4 January 2020 https://web.archive.org/web/20200104173534/https://devblogs.microsoft.com/dotnet/announcing-the-release-of-net-framework-4-5-rtm-product-and-source-code/ live2016-01-12Visual Studio 201282012Vista SP2, 7 SP12008 SP2, 2008 R2 SP14.04.5.1↑2013-10-17.NET Framework 4.5.1 RTM => start coding https://devblogs.microsoft.com/dotnet/net-framework-4-5-1-rtm-start-coding/ .NET Blog Microsoft 17 October 2013 9 November 2019 1 July 2024 https://web.archive.org/web/20240701121748/https://devblogs.microsoft.com/dotnet/net-framework-4-5-1-rtm-start-coding/ live2016-01-12Visual Studio 20138.12012 R2Vista SP2, 7 SP1, 82008 SP2, 2008 R2 SP1, 20124.0, 4.54.5.2↑2014-05-05Announcing the .NET Framework 4.5.2 https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-5-2/ .NET Blog Microsoft 5 May 2014 9 November 2019 9 November 2019 https://web.archive.org/web/20191109120913/https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-5-2/ live2022-04-26Visual Studio 2015Vista SP2, 7 SP1, 8, 8.12008 SP2, 2008 R2 SP1, 2012, 2012 R24.0-4.5.14.6↑2015-07-20Announcing .NET Framework 4.6 https://devblogs.microsoft.com/dotnet/announcing-net-framework-4-6/ .NET Blog Microsoft 20 July 2015 9 November 2019 9 November 2019 https://web.archive.org/web/20191109115409/https://devblogs.microsoft.com/dotnet/announcing-net-framework-4-6/ live2022-04-26Visual Studio 201510 v1507Vista SP2, 7 SP1, 8, 8.1 Update2008 SP2, 2008 R2 SP1, 2012, 2012 R2 Update4.0-4.5.24.6.1↑2015-11-30.NET Framework 4.6.1 is now available! https://devblogs.microsoft.com/dotnet/net-framework-4-6-1-is-now-available/ .NET Blog Microsoft 30 November 2015 9 November 2019 9 November 2019 https://web.archive.org/web/20191109120911/https://devblogs.microsoft.com/dotnet/net-framework-4-6-1-is-now-available/ live2022-04-26Visual Studio 2015 Update 110 v15117 SP1, 8, 8.1 Update, 10 v15072008 R2 SP1, 2012, 2012 R2 Update4.0-4.64.6.2↑2016-08-02Announcing .NET Framework 4.6.2 https://devblogs.microsoft.com/dotnet/announcing-net-framework-4-6-2/ .NET Blog Microsoft 2 August 2016 9 November 2019 17 October 2019 https://web.archive.org/web/20191017205505/https://devblogs.microsoft.com/dotnet/announcing-net-framework-4-6-2/ live2027-01-12Visual Studio 2017 15.010 v160720167 SP1, 8.1 Update, 10 v1507-v15112008 R2 SP1, 2012, 2012 R2 Update4.0-4.6.14.7↑2017-04-05Announcing .NET Framework 4.7 https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-7/ .NET Blog Microsoft 5 April 2017 9 November 2019 17 October 2019 https://web.archive.org/web/20191017205511/https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-7/ liverowspan=5 Same asparent OSVisual Studio 2017 15.110 v17037 SP1, 8.1 Update, 10 v16072008 R2 SP1, 2012, 2012 R2 Update, 20164.0-4.6.24.7.1↑2017-10-17Announcing .NET Framework 4.7.1 https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-7-1/ .NET Blog Microsoft 17 October 2017 9 November 2019 14 March 2020 https://web.archive.org/web/20200314150818/https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-7-1/ liveVisual Studio 2017 15.510 v1709v17097 SP1, 8.1 Update, 10 v1607-v17032008 R2 SP1, 2012, 2012 R2 Update, 20164.0-4.74.7.2↑2018-04-30Announcing .NET Framework 4.7.2 https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-7-2/ .NET Blog Microsoft 30 April 2018 9 November 2019 15 December 2019 https://web.archive.org/web/20191215041844/https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-7-2/ liveVisual Studio 2017 15.810 v1803-v1809v1803-v1809, 20197 SP1, 8.1 Update, 10 v1607-v17092008 R2 SP1, 2012, 2012 R2 Update, 2016, v17094.0-4.7.14.8↑2019-04-18Announcing .NET Framework 4.8 https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-8/ .NET Blog Microsoft 18 April 2019 18 April 2019 19 April 2019 https://web.archive.org/web/20190419141220/https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-8/ liveVisual Studio 2019 16.310 v1903-v22H2, 11 v21H2v1903-v20H2, 20227 SP1, 8.1 Update, 10 v1607-v18092008 R2 SP1, 2012, 2012 R2 Update, 2016, v1709-v1809, 20194.0-4.7.24.8.1↑2022-08-09Announcing .NET Framework 4.8.1 https://devblogs.microsoft.com/dotnet/announcing-dotnet-framework-481/ .NET Blog Microsoft 9 August 2022 11 August 2022 10 August 2022 https://web.archive.org/web/20220810140115/https://web.archive.org/web/20220810140115/https://devblogs.microsoft.com/dotnet/announcing-dotnet-framework-481/ liveVisual Studio 2022 17.311 v22H2-v26H2v23H2, 202510 v20H2-v22H2, 11 v21H2v20H2, 20224.0-4.8 Notes: a.a1 none .NET Framework 1.0 is an integral component of Windows XP Media Center Edition and Windows XP Tablet PC Edition. Installation CDs for the Home edition and the Professional edition of Windows XP SP1, SP2 or SP3 come with .NET Framework 1.0 installation packages. b.b1 none Installation CDs for the Home edition and the Professional edition of Windows XP SP2 and SP3 come with .NET Framework 1.1 installation packages. c.c1 none .NET Framework is not automatically installed with this operating system. It must be installed either from a Windows installation media or from the Internet on demand. Control Panel or Server Manager always attempts the latter.Install the .NET Framework 3.5 on Windows 10, Windows 8.1, and Windows 8 https://docs.microsoft.com/en-us/dotnet/framework/install/dotnet-35-windows-10 MSDN Microsoft https://web.archive.org/web/20190928132942/https://docs.microsoft.com/en-us/dotnet/framework/install/dotnet-35-windows-10 28 September 2019 d.d1 none This date applies only when running on Windows 10 version 1809, Windows Server 2019 or later. On older versions of Windows, .NET Framework 3.5 Service Pack 1 adopts the lifecycle of the underlying Windows operating system. .NET Framework 1.0 The first version of the .NET Framework was released on 15 January 2002 for Windows 98, Me, NT 4.0, 2000, and XP. Mainstream support for this version ended on 10 July 2007, and extended support ended on 14 July 2009, with the exception of Windows XP Media Center and Tablet PC editions. On 19 June 2001, the tenth anniversary of the release of Visual Basic, .NET Framework 1.0 Beta 2 was released.http://betanews.com/2001/12/05/gates-revises-visual-studio-net-release-date/ Gates Revises Visual Studio .NET Release Date 2001-12-05 BetaNews 2016-07-01 15 August 2016 https://web.archive.org/web/20160815225556/http://betanews.com/2001/12/05/gates-revises-visual-studio-net-release-date/ live .NET Framework 1.0 is supported on Windows 98, Me, NT 4.0 (with Service Pack 6a), 2000, XP, and Server 2003. Applications utilizing .NET Framework 1.0 will also run on computers with .NET Framework 1.1 installed, which supports additional operating systems..NET Framework System Requirements https://msdn.microsoft.com/en-us/library/8z6watww%28v=vs.90%29.aspx MSDN Microsoft 28 November 2016 20 December 2016 https://web.archive.org/web/20161220061143/https://msdn.microsoft.com/en-us/library/8z6watww%28v=vs.90%29.aspx live Service Pack 1 The .NET Framework 1.0 Service Pack 1 was released on 19 March 2002.https://www.microsoft.com/en-us/download/details.aspx?id=23538 .NET Framework Service Pack Microsoft 21 May 2012 https://web.archive.org/web/20120521030700/https://www.microsoft.com/en-us/download/details.aspx?id=23538 21 May 2012 dead Service Pack 2 .NET Framework 1.0 Service Pack 2 was released on 7 August 2002.https://www.microsoft.com/en-us/download/details.aspx?id=8668 ASP.NET Security Update for Microsoft .NET Framework 1.0 Service Pack 2 Microsoft 22 August 2018 22 August 2018 https://web.archive.org/web/20180822081048/https://www.microsoft.com/en-us/download/details.aspx?id=8668 live It is the first commercially released version of .NET Framework to be included as part of a Windows operating systems, shipping with the installation media of Windows XP SP1 as an optional component. Service Pack 3 .NET Framework 1.0 Service Pack 3 was released on 30 August 2004.https://www.microsoft.com/en-us/download/details.aspx?id=13181 Microsoft .NET Framework 1.0 Service Pack 3 Microsoft 22 August 2018 22 August 2018 https://web.archive.org/web/20180822050243/https://www.microsoft.com/en-us/download/details.aspx?id=13181 live .NET Framework 1.1 Version 1.1 is the first minor .NET Framework upgrade. It is available on its own as a redistributable package or in a software development kit, and was published on 3 April 2003. It is also part of the second release of Visual Studio .NET 2003. This is the first version of the .NET Framework to be included as part of the Windows operating system, shipping with Windows Server 2003. Mainstream support for .NET Framework 1.1 ended on 14 October 2008, and extended support ended on 8 October 2013. .NET Framework 1.1 provides full backward compatibility to version 1.0, except in rare instances where an application will not run because it checks the version number of a library..NET Framework Developer Center – Frequently Asked Questions http://msdn.microsoft.com/en-us/netframework/Aa497323.aspx https://web.archive.org/web/20120724012426/http://msdn.microsoft.com/en-us/netframework/aa497323.aspx 24 July 2012 live Changes in 1.1 include:New and Enhanced Features https://msdn.microsoft.com/en-us/library/h88tthh0(v=vs.71).aspx MSDN Microsoft https://web.archive.org/web/20110127162056/http://msdn.microsoft.com/en-us/library/h88tthh0(v=vs.71).aspx 27 January 2011 live Built-in support for mobile ASP.NET controls, which was previously available as an add-on Enables Windows Forms assemblies to execute in a semi-trusted manner from the Internet Enables Code Access Security in ASP.NET applications Built-in support for ODBC and Oracle Database, which was previously available as an add-on .NET Compact Framework, a version of the .NET Framework for small devices Internet Protocol version 6 (IPv6) support .NET Framework 1.1 is supported on Windows 98, Me, NT 4.0 (with Service Pack 6a), 2000, XP, Server 2003, Vista, and Server 2008..NET Framework 1.1 Redistributable https://www.microsoft.com/en-us/download/details.aspx?id=26 MSDN Microsoft 5 December 2016 3 December 2016 https://web.archive.org/web/20161203090341/http://www.microsoft.com/en-us/download/details.aspx?id=26 live Service Pack 1 The .NET Framework 1.1 Service Pack 1 was released on 30 August 2004.https://www.microsoft.com/en-us/download/details.aspx?id=33 Microsoft .NET Framework 1.1 Service Pack 1 Microsoft 22 August 2018 22 August 2018 https://web.archive.org/web/20180822050249/https://www.microsoft.com/en-us/download/details.aspx?id=33 live It requires Windows NT 4.0 SP6a plus Windows Installer 2.0. It is the last version to support Windows NT 4.0 SP6a, Windows 2000 RTM–SP2 and Windows XP RTM–SP1. .NET Framework 2.0 Version 2.0 was released on 27 October 2005. It was also released along with Visual Studio 2005, Microsoft SQL Server 2005, and BizTalk 2006. A software development kit for this version was released on 29 November 2006. http://www.microsoft.com/en-us/download/details.aspx?id=19988 .NET Framework 2.0 Software Development Kit (SDK) (x86) 29 November 2006 Downloads Microsoft 1 September 2014 3 September 2014 https://web.archive.org/web/20140903104359/http://www.microsoft.com/en-us/download/details.aspx?id=19988 live Support ended on 12 July 2011. It is the last version to support Windows 98, Windows 2000 SP3, Windows Me and Windows Server 2003 RTM.Microsoft .NET Framework 3.5 Administrator Deployment Guide http://msdn.microsoft.com/en-us/library/cc160717.aspx dead https://web.archive.org/web/20090214083212/http://msdn.microsoft.com/en-us/library/cc160717.aspx 14 February 2009 26 June 2008 MSDN Microsoft Changes in 2.0 include: Full 64-bit computing support for both the x64 and the IA-64 hardware platforms Microsoft SQL Server integration: Instead of using T-SQL, one can build stored procedures and triggers in any of the .NET-compatible languages A new hosting API for native applications wishing to host an instance of the .NET runtime: The new API gives a fine grain control on the behavior of the runtime with regards to multithreading, memory allocation and assembly loading. It was initially developed to efficiently host the runtime in Microsoft SQL Server, which implements its own scheduler and memory manager. New personalization features for ASP.NET, such as support for themes, skins, master pages and webparts .NET Micro Framework, a version of the .NET Framework related to the Smart Personal Objects Technology initiative Membership provider Partial classes Nullable types Anonymous methods Iterators Data tables Common Language Runtime (CLR) 2.0 Language support for generics built directly into the .NET CLR .NET Framework 2.0 is supported on Windows 98, Me, 2000 (with Service Pack 3 or higher), XP (with Service Pack 2 or higher), Server 2003, Server 2008 and Server 2008 R2. An unofficial backport for Windows 95 was created in 2024.Posch Maya 2024-04-14 Porting Modern Windows Applications To Windows 95 https://hackaday.com/2024/04/14/porting-modern-windows-applications-to-windows-95/ live https://web.archive.org/web/20240701121659/https://hackaday.com/2024/04/14/porting-modern-windows-applications-to-windows-95/ 2024-07-01 2024-07-01 Hackaday en-USMattKC itsmattkc/dotnet9x 2024-06-30 GitHub https://github.com/itsmattkc/dotnet9x 2024-07-03 Applications utilizing .NET Framework 2.0 will also run on computers with .NET Framework 3.0 or 3.5 installed, which supports additional operating systems. Service Pack 1 The .NET Framework 2.0 Service Pack 1 was released on 19 November 2007.Microsoft .NET Framework 2.0 Service Pack 1 (x86) https://web.archive.org/web/20180822050254/https://www.microsoft.com/en-us/download/details.aspx?id=16614 22 August 2018 microsoft.com It requires Windows 2000 with SP4. Service Pack 2 The .NET Framework 2.0 Service Pack 2 was released on 11 August 2008.Microsoft .NET Framework 2.0 Service Pack 2 Microsoft https://www.microsoft.com/en-us/download/details.aspx?id=1639 dead 22 August 2018 https://web.archive.org/web/20180822050223/https://www.microsoft.com/en-us/download/details.aspx?id=1639 22 August 2018 microsoft.com It requires Windows 2000 with SP4 plus KB835732 or KB891861 update, Windows XP with SP2 plus Windows Installer 3.1. It is the last version to support Windows 2000 SP4 although there have been some unofficial workarounds to use a subset of the functionality from Version 3.5 in Windows 2000.Microsoft .NET Framework 3.5 in Windows 2000 http://rainstorms.me.uk/blog/2008/03/12/microsoft-net-framework-35-in-windows-2000 https://web.archive.org/web/20111007045155/http://rainstorms.me.uk/blog/2008/03/12/microsoft-net-framework-35-in-windows-2000/ 7 October 2011 6 October 2011 dead .NET Framework 3.0 thumb|400px|Elements of the Microsoft .NET Framework version 3.0 .NET Framework 3.0, formerly called WinFX,https://docs.microsoft.com/en-us/archive/blogs/somasegar/ https://web.archive.org/web/20070611033642/http://blogs.msdn.com/somasegar/archive/2006/06/09/624300.aspx dead Somasegar's blog 11 June 2007 docs.microsoft.com was released on 6 November 2006. It includes a new set of managed code APIs that are an integral part of Windows Vista and Windows Server 2008. It is also available for Windows XP SP2 and Windows Server 2003 as a download. There are no major architectural changes included with this release; .NET Framework 3.0 uses the same CLR as .NET Framework 2.0.http://msdn.microsoft.com/netframework/aa663314.aspx .NET Framework 3.0 Versioning and Deployment Q&A 1 June 2008 25 December 2018 https://web.archive.org/web/20181225171516/https://msdn.microsoft.com/Message-Error.htm?aspxerrorpath=%2Fnetframework%2Faa663314.aspx live Unlike the previous major .NET releases there was no .NET Compact Framework release made as a counterpart of this version. Version 3.0 of the .NET Framework shipped with Windows Vista. It also shipped with Windows Server 2008 as an optional component (disabled by default). .NET Framework 3.0 consists of four major new components: Windows Presentation Foundation (WPF), formerly code-named Avalon: A new user interface subsystem and API based on XAML markup language, which uses 3D computer graphics hardware and Direct3D technologies http://msdn.microsoft.com/en-us/library/ms754130.aspx Windows Presentation Foundation 1 September 2014 MSDN Microsoft 11 October 2010 https://web.archive.org/web/20101011194434/http://msdn.microsoft.com/en-us/library/ms754130.aspx live Windows Communication Foundation (WCF), formerly code-named Indigo: A service-oriented messaging system which allows programs to interoperate locally or remotely similar to web services Windows Workflow Foundation (WF): Allows building task automation and integrated transactions using workflows Windows CardSpace, formerly code-named InfoCard: A software component which securely stores a person's digital identities and provides a unified interface for choosing the identity for a particular transaction, such as logging into a website .NET Framework 3.0 is supported on Windows XP, Server 2003, Vista, Server 2008, and Server 2008 R2. Applications utilizing .NET Framework 3.0 will also run on computers with .NET Framework 3.5 installed, which supports additional operating systems. Service Pack 1 .NET Framework 3.0 Service Pack 1 was released on 19 November 2007.https://www.microsoft.com/en-us/download/details.aspx?id=3005 .NET Framework 3.0 SP1 Microsoft Download Center 22 August 2018 22 August 2018 https://web.archive.org/web/20180822050211/https://www.microsoft.com/en-us/download/details.aspx?id=3005 live Service Pack 2 .NET Framework 3.0 Service Pack 2 was released on 11 August 2008.https://www.microsoft.com/en-us/download/details.aspx?id=6962 .NET Framework 3.0 Service Pack 2 Update for Windows Server 2003 and Windows XP Microsoft 22 August 2018 22 August 2018 https://web.archive.org/web/20180822050107/https://www.microsoft.com/en-us/download/details.aspx?id=6962 live .NET Framework 3.5 Version 3.5 of the .NET Framework was released on 19 November 2007. As with .NET Framework 3.0, version 3.5 uses Common Language Runtime (CLR) 2.0, that is, the same version as .NET Framework version 2.0. In addition, .NET Framework 3.5 also installs .NET Framework 2.0 SP1 and 3.0 SP1 (with the later 3.5 SP1 instead installing 2.0 SP2 and 3.0 SP2), which adds some methods and properties to the BCL classes in version 2.0 which are required for version 3.5 features such as Language Integrated Query (LINQ). These changes do not affect applications written for version 2.0, however.http://www.hanselman.com/blog/CommentView.aspx?guid=7cd75505-192f-4fef-b617-e47e1e2cb94b Catching RedBits differences in .NET 2.0 and .NET 2.0SP1 1 June 2008 https://web.archive.org/web/20080430003858/http://www.hanselman.com/blog/CommentView.aspx?guid=7cd75505-192f-4fef-b617-e47e1e2cb94b 30 April 2008 live As with previous versions, a new .NET Compact Framework 3.5 was released in tandem with this update in order to provide support for additional features on Windows Mobile and Windows Embedded CE devices. The source code of the Framework Class Library in this version has been partially released (for debugging reference only) under the Microsoft Reference Source License.http://weblogs.asp.net/scottgu/archive/2007/10/03/releasing-the-source-code-for-the-net-framework-libraries.aspx Releasing the Source Code for the NET Framework Scott Guthrie 3 October 2007 15 September 2010 https://web.archive.org/web/20100907233621/http://weblogs.asp.net/scottgu/archive/2007/10/03/releasing-the-source-code-for-the-net-framework-libraries.aspx 7 September 2010 live .NET Framework 3.5 is supported on Windows XP (with Service Pack 2 or higher), Server 2003 (with Service Pack 1 or higher), Vista, Server 2008, 7, Server 2008 R2, 8, Server 2012, 8.1, Server 2012 R2, 10, and Server 2016. An unofficial backport for Windows 95 and later was created in 2024. Starting from Windows 8, .NET Framework 3.5 is an optional feature that can be turned on or off in control panel. .NET Framework 3.5 is also available as a Windows Container image, allowing old applications that rely on .NET Framework 2.0–3.5 to run in a container environment.Docker Hub https://hub.docker.com/_/microsoft-dotnet-framework-runtime/ 2021-02-10 hub.docker.com 12 November 2020 https://web.archive.org/web/20201112041919/https://hub.docker.com/_/microsoft-dotnet-framework-runtime live Service Pack 1 The .NET Framework 3.5 Service Pack 1 was released on 11 August 2008. This release adds new functionality and provides performance improvements under certain conditions,http://msdn.microsoft.com/vstudio/products/cc533447.aspx Visual Studio 2008 Service Pack 1 and .NET Framework 3.5 Service Pack 1 7 September 2008 https://web.archive.org/web/20080708235537/http://msdn.microsoft.com/vstudio/products/cc533447.aspx 8 July 2008 live especially with WPF where 20–45% improvements are expected. Two new data service components have been added, the ADO.NET Entity Framework and ADO.NET Data Services. Two new assemblies for web development, System.Web.Abstraction and System.Web.Routing, have been added; these are used in the ASP.NET MVC framework and, reportedly, will be used in the future release of ASP.NET Forms applications. Service Pack 1 is included with SQL Server 2008 and Visual Studio 2008 Service Pack 1. It also featured a new set of controls called "Visual Basic Power Packs" which brought back Visual Basic controls such as "Line" and "Shape." Version 3.5 SP1 of the .NET Framework shipped with Windows 7. It also shipped with Windows Server 2008 R2 as an optional component (disabled by default). It is the last version to support Windows XP SP2, Windows Server 2003 SP1 and Windows Vista RTM. .NET Framework 3.5 SP1 Client Profile For the .NET Framework 3.5 SP1 there is also a new variant of the .NET Framework, called the ".NET Framework Client Profile", which at 28 MB is significantly smaller than the full framework and only installs components that are the most relevant to desktop applications.http://blogs.msdn.com/bclteam/archive/2008/05/21/net-framework-client-profile-justin-van-patten.aspx .NET Framework Client Profile 21 May 2008 30 September 2008 Justin Van Patten BCL Team Blog MSDN Blogs https://web.archive.org/web/20081207211314/http://blogs.msdn.com/bclteam/archive/2008/05/21/net-framework-client-profile-justin-van-patten.aspx 7 December 2008 live However, the Client Profile amounts to this size only if using the online installer on Windows XP SP2 when no other .NET Frameworks are installed or using Windows Update. When using the off-line installer or any other OS, the download size is still 250 MB.http://blogs.msdn.com/jaimer/archive/2008/08/20/client-profile-explained.aspx Client profile explained.. 20 August 2008 15 February 2009 Jaime Rodriguez https://web.archive.org/web/20090205153531/http://blogs.msdn.com/jaimer/archive/2008/08/20/client-profile-explained.aspx 5 February 2009 live .NET Framework 4.0 Key focuses for this release are: Parallel Extensions to improve support for parallel computing, which target multi-core or distributed systems. http://blogs.msdn.com/somasegar/archive/2007/05/09/the-world-of-multi-and-many-cores.aspx The world of multi and many cores S. Somasegar 1 June 2008 https://web.archive.org/web/20070714194650/http://blogs.msdn.com/somasegar/archive/2007/05/09/the-world-of-multi-and-many-cores.aspx 14 July 2007 live To this end, technologies like PLINQ (Parallel LINQ), http://msdn.microsoft.com/magazine/cc163329.aspx Parallel LINQ: Running Queries on Multi-Core Processors 2 June 2008 25 December 2018 https://web.archive.org/web/20181225171924/https://msdn.microsoft.com/magazine/cc163329.aspx live a parallel implementation of the LINQ engine, and Task Parallel Library, which exposes parallel constructs via method calls, http://msdn.microsoft.com/magazine/cc163340.aspx Parallel Performance: Optimize Managed Code For Multi-Core Machines 2 June 2008 25 December 2018 https://web.archive.org/web/20181225171919/https://msdn.microsoft.com/magazine/cc163340.aspx live are included. New Visual Basic .NET and C# language features, such as implicit line continuations, dynamic dispatch, named parameters, and optional parameters Support for Code ContractsCode Contracts http://msdn.microsoft.com/en-us/devlabs/dd491992.aspx Dev Labs https://web.archive.org/web/20110216005315/http://msdn.microsoft.com/en-us/devlabs/dd491992.aspx 16 February 2011 live Inclusion of new types to work with arbitrary-precision arithmetic (System.Numerics.BigInteger)BigInteger Structure https://msdn.microsoft.com/en-us/library/system.numerics.biginteger(v=vs.100).aspx MSDN Microsoft 11 March 2016 12 March 2016 https://web.archive.org/web/20160312013359/https://msdn.microsoft.com/en-us/library/system.numerics.biginteger(v=vs.100).aspx live and complex numbers (System.Numerics.Complex)Complex Structure https://msdn.microsoft.com/library/system.numerics.complex(VS.100).aspx MSDN Microsoft 11 March 2016 12 March 2016 https://web.archive.org/web/20160312083518/https://msdn.microsoft.com/library/system.numerics.complex(VS.100).aspx live Introduced Common Language Runtime (CLR) 4.0 .NET Framework 4.0 is supported on Windows XP (with Service Pack 3), Windows Server 2003 (with Service Pack 2), Vista (with Service Pack 1 or higher), Server 2008, 7 and Server 2008 R2. Applications utilizing .NET Framework 4.0 will also run on computers with .NET Framework 4.5 or 4.6 installed, which supports additional operating systems. Support for .NET Framework 4.0 ended on 12 April 2016 and is no longer providing technical support, bug fixes, or security fixes for .NET Framework 4.0 vulnerabilities which may be subsequently reported or discovered. It is the last version to support Windows XP SP3, Windows Server 2003 SP2, Windows Vista SP1, Windows Server 2008 RTM, Windows 7 RTM and Windows Server 2008 R2 RTM. History Microsoft announced the intention to ship .NET Framework 4 on 29 September 2008. The Public Beta was released on 20 May 2009.http://blogs.msdn.com/somasegar/archive/2009/05/18/visual-studio-2010-and-net-fx-4-beta-1-ships.aspx S. Somasegar Visual Studio 2010 and .NET FX 4 Beta 1 ships! 25 May 2009 https://web.archive.org/web/20090523110420/http://blogs.msdn.com/somasegar/archive/2009/05/18/visual-studio-2010-and-net-fx-4-beta-1-ships.aspx 23 May 2009 live On 28 July 2009, a second release of the .NET Framework 4 beta was made available with experimental software transactional memory support. https://learn.microsoft.com/en-us/archive/blogs/somasegar/stm-net-on-devlabs STM.NET on DevLabs 27 July 2008 5 May 2026 Somasegar's blog Somasegar S. This functionality is not available in the final version of the framework. On 19 October 2009, Microsoft released Beta 2 of the .NET Framework 4.http://blogs.msdn.com/somasegar/archive/2009/10/19/announcing-visual-studio-2010-and-net-fx-4-beta-2.aspx Announcing Visual Studio 2010 and .NET FX 4 Beta 2 S. Somasegar MSDN Blogs 20 October 2009 https://web.archive.org/web/20091022053419/http://blogs.msdn.com/somasegar/archive/2009/10/19/announcing-visual-studio-2010-and-net-fx-4-beta-2.aspx 22 October 2009 live At the same time, Microsoft announced the expected launch date for .NET Framework 4 as 22 March 2010. This launch date was subsequently delayed to 12 April 2010.http://blogs.msdn.com/robcaron/archive/2010/01/13/9948172.aspx Visual Studio 2010 and .NET Framework 4 Launch Date Rob Caron MSDN Blogs 13 January 2010 https://web.archive.org/web/20100117135051/http://blogs.msdn.com/robcaron/archive/2010/01/13/9948172.aspx 17 January 2010 live On 10 February 2010, a release candidate was published.https://www.infoworld.com/article/2627953/microsoft-offers-visual-studio-2010-release-candidate.html https://web.archive.org/web/20100521085427/http://www.infoworld.com/d/developer-world/microsoft-offers-visual-studio-2010-release-candidate-643 dead Microsoft offers Visual Studio 2010 release candidate Paul Krill 9 February 2010 21 May 2010 InfoWorld On 12 April 2010, the final version of .NET Framework 4.0 was launched alongside the final release of Microsoft Visual Studio 2010.Emil Protalinski Visual Studio 2010 and .NET Framework 4 arrive https://arstechnica.com/information-technology/2010/04/visual-studio-2010-and-net-framework-40-arrive/ Ars Technica 12 April 2010 14 June 2017 26 December 2017 https://web.archive.org/web/20171226112717/https://arstechnica.com/information-technology/2010/04/visual-studio-2010-and-net-framework-40-arrive/ live On 18 April 2011, version 4.0.1 was released supporting some customer-demanded fixes for Windows Workflow Foundation.Microsoft .NET Framework 4 Platform Update 1 https://docs.microsoft.com/en-us/archive/blogs/endpoint/microsoft-net-framework-4-platform-update-1 The .NET Endpoint's Blog Microsoft 18 April 2011 5 June 2021 5 June 2021 https://web.archive.org/web/20210605055404/https://docs.microsoft.com/en-us/archive/blogs/endpoint/microsoft-net-framework-4-platform-update-1 liveUpdate 4.0.1 for Microsoft .NET Framework 4 – Runtime Update https://support.microsoft.com/en-us/topic/update-4-0-1-for-microsoft-net-framework-4-runtime-update-43f0eda2-0942-2da5-44ec-905679fd6812 support.microsoft.com Microsoft 13 April 2011 5 June 2021 5 June 2021 https://web.archive.org/web/20210605055405/https://support.microsoft.com/en-us/topic/update-4-0-1-for-microsoft-net-framework-4-runtime-update-43f0eda2-0942-2da5-44ec-905679fd6812 live Its design-time component, which requires Visual Studio 2010 SP1, adds a workflow state machine designer. On 27 October 2011, version 4.0.2 was released supporting some new features of Microsoft SQL Server.Update 4.0.2 for the Microsoft .NET Framework 4 https://devblogs.microsoft.com/dotnet/update-4-0-2-for-the-microsoft-net-framework-4/ .NET Blog Microsoft 27 October 2011 5 June 2021 5 June 2021 https://web.archive.org/web/20210605055406/https://devblogs.microsoft.com/dotnet/update-4-0-2-for-the-microsoft-net-framework-4/ liveUpdate 4.0.2 for Microsoft .NET Framework 4 – Runtime Update https://support.microsoft.com/en-us/topic/update-4-0-2-for-microsoft-net-framework-4-runtime-update-8d0f21a2-2459-c5dd-8a23-49518a89cafc support.microsoft.com Microsoft 19 October 2011 5 June 2021 5 June 2021 https://web.archive.org/web/20210605055408/https://support.microsoft.com/en-us/topic/update-4-0-2-for-microsoft-net-framework-4-runtime-update-8d0f21a2-2459-c5dd-8a23-49518a89cafc live On 5 March 2012, version 4.0.3 was released.Update 4.0.3 for the Microsoft .NET Framework 4 https://devblogs.microsoft.com/dotnet/update-4-0-3-for-the-microsoft-net-framework-4/ .NET Blog Microsoft 5 March 2012 5 June 2021 5 June 2021 https://web.archive.org/web/20210605055407/https://devblogs.microsoft.com/dotnet/update-4-0-3-for-the-microsoft-net-framework-4/ liveUpdate 4.0.3 for Microsoft .NET Framework 4 – Runtime Update https://support.microsoft.com/en-us/topic/update-4-0-3-for-microsoft-net-framework-4-runtime-update-becfc63b-125e-84a5-68e8-5d2357d33f4a support.microsoft.com Microsoft 4 March 2012 5 June 2021 5 June 2021 https://web.archive.org/web/20210605055406/https://support.microsoft.com/en-us/topic/update-4-0-3-for-microsoft-net-framework-4-runtime-update-becfc63b-125e-84a5-68e8-5d2357d33f4a live Windows Server AppFabric After the release of the .NET Framework 4, Microsoft released a set of enhancements, named Windows Server AppFabric,http://blogs.iis.net/appfabric/archive/2010/06/07/windows-server-appfabric-now-generally-available.aspx AppFabric Blog – Windows Server AppFabric now Generally Available blogs.iis.net 7 June 2010 19 December 2010 9 June 2010 https://web.archive.org/web/20100609041449/http://blogs.iis.net/appfabric/archive/2010/06/07/windows-server-appfabric-now-generally-available.aspx live for application server capabilities in the form of AppFabric Hostinghttps://blogs.msdn.microsoft.com/architectsrule/2008/10/01/net-framework-4-0-and-dublin-application-server/ 'Dublin' App Server coming to .NET 4 DevSource 27 April 2009 https://web.archive.org/web/20171226112930/https://blogs.msdn.microsoft.com/architectsrule/2008/10/01/net-framework-4-0-and-dublin-application-server/ 26 December 2017 deadhttp://blogs.msdn.com/architectsrule/archive/2008/10/01/net-framework-4-0-and-dublin-application-server.aspx .NET Framework 4 and Dublin Application Server MSDN Blogs 27 April 2009 https://web.archive.org/web/20090510131816/http://blogs.msdn.com/architectsrule/archive/2008/10/01/net-framework-4-0-and-dublin-application-server.aspx 10 May 2009 dead and in-memory distributed caching support. .NET Framework 4.5 .NET Framework 4.5 was released on 15 August 2012;http://blogs.msdn.com/b/dotnet/archive/2012/08/15/announcing-the-release-of-net-framework-4-5-rtm-product-and-source-code.aspx Announcing the release of .NET Framework 4.5 RTM – Product and Source Code Brandon Bray(MSDN Blogs) 15 August 2012 17 August 2012 https://web.archive.org/web/20120817233450/http://blogs.msdn.com/b/dotnet/archive/2012/08/15/announcing-the-release-of-net-framework-4-5-rtm-product-and-source-code.aspx live a set of new or improved features were added into this version.http://msdn.microsoft.com/en-us/library/ms171868%28v=VS.110%29.aspx What's New in the .NET Framework 4.5 MSDN Library 15 August 2012 14 August 2012 https://web.archive.org/web/20120814112405/http://msdn.microsoft.com/en-US/library/ms171868(v=vs.110).aspx live NET Framework 4.5 is supported on Windows Vista or later.https://www.microsoft.com/en-us/download/details.aspx?id=30653 .NET Framework 4.5 Microsoft Download Center 23 May 2018 22 May 2018 https://web.archive.org/web/20180522055555/http://www.microsoft.com/EN-US/DOWNLOAD/DETAILS.ASPX?ID=30653 livehttp://www.microsoft.com/visualstudio/11/en-us/downloads#net-45 Standalone Installers .NET 4.5 microsoft.com 16 December 2018 https://web.archive.org/web/20120817140552/http://www.microsoft.com/visualstudio/11/en-us/downloads#net-45 17 August 2012 dead The .NET Framework 4.5 uses Common Language Runtime 4.0, with some additional runtime features.http://msdn.microsoft.com/en-us/library/bb822049.aspx .NET Framework Versions and Dependencies rpetrusha msdn.microsoft.com 25 July 2013 7 August 2013 https://web.archive.org/web/20130807051529/http://msdn.microsoft.com/en-us/library/bb822049.aspx live .NET Framework 4.5 is supported on Windows Vista (with Service Pack 2), Server 2008 (with Service Pack 2), 7 (with Service Pack 1), Server 2008 R2 (with Service Pack 1), 8, Server 2012, 8.1 and Server 2012 R2. Applications utilizing .NET Framework 4.5 will also run on computers with .NET Framework 4.6 installed, which supports additional operating systems. .NET for Metro-style apps Metro-style apps were originally designed for specific form factors and leverage the power of the Windows operating system. Two subset of the .NET Framework is available for building Metro-style apps using C# or Visual Basic: One for Windows 8 and Windows 8.1, called .NET APIs for Windows 8.x Store apps. Another for Universal Windows Platform (UWP), called .NET APIs for UWP. This version of .NET Framework, as well as the runtime and libraries used for Metro-style apps, is a part of Windows Runtime, the new platform and development model for Metro-style apps. It is an ecosystem that houses many platforms and languages, including .NET Framework, C++ and HTML5 with JavaScript..NET for Windows apps https://msdn.microsoft.com/en-us/library/windows/apps/br230232.aspx MSDN Microsoft 26 January 2016 20 February 2016 https://web.archive.org/web/20160220182055/https://msdn.microsoft.com/en-us/library/windows/apps/br230232.aspx live Core features Ability to limit how long the regular expression engine will attempt to resolve a regular expression before it times out. Ability to define the culture for an application domain. Console support for Unicode (UTF-16) encoding. Support for versioning of cultural string ordering and comparison data. Better performance when retrieving resources. Native support for Zip compression (previous versions supported the compression algorithm, but not the archive format). Ability to customize a reflection context to override default reflection behavior through the CustomReflectionContext class. New asynchronous features were added to the C# and Visual Basic languages. These features add a task-based model for performing asynchronous operations,http://blogs.msdn.com/b/dotnet/archive/2012/04/03/async-in-4-5-worth-the-await.aspx Async in 4.5: Worth the Await – .NET Blog – Site Home – MSDN Blogs Blogs.msdn.com 2014-05-13 7 April 2012 https://web.archive.org/web/20120407032353/http://blogs.msdn.com/b/dotnet/archive/2012/04/03/async-in-4-5-worth-the-await.aspx live http://msdn.microsoft.com/en-us/library/hh191443.aspx Asynchronous Programming with Async and Await (C# and Visual Basic) Msdn.microsoft.com 2014-05-13 27 May 2014 https://web.archive.org/web/20140527131045/http://msdn.microsoft.com/en-us/library/hh191443.aspx live implementing futures and promises. Managed Extensibility Framework (MEF) Managed Extensibility Framework The Managed Extensibility Framework or MEF is a library for creating lightweight, extensible applications. It allows application developers to discover and use extensions with no configuration required. It also lets extension developers easily encapsulate code and avoid fragile hard dependencies. MEF not only allows extensions to be reused within applications, but across applications as well.Managed Extensibility Framework (MEF) https://msdn.microsoft.com/en-us/library/dd460648(v=vs.110).aspx MSDN Blogs Microsoft 4 October 2016 18 October 2016 https://web.archive.org/web/20161018025238/https://msdn.microsoft.com/en-us/library/dd460648%28v=vs.110%29.aspx live ASP.NET Support for new HTML5 form types. Support for model binders in Web Forms. These let you bind data controls directly to data-access methods, and automatically convert user input to and from .NET Framework data types. Support for unobtrusive JavaScript in client-side validation scripts. Improved handling of client script through bundling and minification for improved page performance. Integrated encoding routines from the Anti-XSS library (previously an external library) to protect from cross-site scripting attacks. Support for WebSocket protocol. Support for reading and writing HTTP requests and responses asynchronously. Support for asynchronous modules and handlers. Support for content distribution network (CDN) fallback in the ScriptManager control. Networking Provides a new programming interface for HTTP applications: System.Net.Http namespace and System.Net.Http.Headers namespaces are added Improved internationalization and IPv6 support RFC-compliant URI support Support for internationalized domain name (IDN) parsing Support for Email Address Internationalization (EAI) .NET Framework 4.5.1 The release of .NET Framework 4.5.1 was announced on 17 October 2013 along Visual Studio 2013..NET Framework 4.5.1 RTM => start coding http://blogs.msdn.com/b/dotnet/archive/2013/10/17/net-framework-4-5-1-rtm-gt-start-coding.aspx .NET Framework Blog Microsoft 18 November 2013 17 October 2013 22 November 2013 https://web.archive.org/web/20131122042500/http://blogs.msdn.com/b/dotnet/archive/2013/10/17/net-framework-4-5-1-rtm-gt-start-coding.aspx live This version requires Windows Vista SP2 and laterMicrosoft .NET Framework 4.5.1 (Offline Installer) http://www.microsoft.com/en-us/download/details.aspx?id=40779 Download Center Microsoft 18 November 2013 12 October 2013 28 November 2013 https://web.archive.org/web/20131128023006/http://www.microsoft.com/en-us/download/details.aspx?id=40779 live and is included with Windows 8.1 and Windows Server 2012 R2. New features of .NET Framework 4.5.1:.NET Framework 4.5.1 RTM => start coding https://blogs.msdn.microsoft.com/dotnet/2013/10/17/net-framework-4-5-1-rtm-start-coding/ MSDN Blogs 17 October 2013 Microsoft 4 October 2016 9 October 2016 https://web.archive.org/web/20161009180408/https://blogs.msdn.microsoft.com/dotnet/2013/10/17/net-framework-4-5-1-rtm-start-coding/ live Debugger support for X64 edit and continue (EnC) Debugger support for seeing managed return values Async-aware debugging in the Call Stack and Tasks windows Debugger support for analyzing .NET memory dumps (in the Visual Studio Ultimate SKU) Tools for .NET developers in the Performance and Diagnostics hub Code Analysis UI improvements ADO.NET idle connection resiliency .NET Framework 4.5.2 The release of .NET Framework 4.5.2 was announced on 5 May 2014.Announcing the .NET Framework 4.5.2 https://blogs.msdn.microsoft.com/dotnet/2014/05/05/announcing-the-net-framework-4-5-2/ MSDN Blogs 5 May 2014 Microsoft 11 June 2014 14 March 2017 https://web.archive.org/web/20170314154349/https://blogs.msdn.microsoft.com/dotnet/2014/05/05/announcing-the-net-framework-4-5-2/ live This version requires Windows Vista SP2 and later.Microsoft .NET Framework 4.5.2 (Offline Installer) http://www.microsoft.com/en-us/download/details.aspx?id=42642 Download Center Microsoft 6 May 2017 6 May 2014 4 May 2017 https://web.archive.org/web/20170504193816/http://www.microsoft.com/en-us/download/details.aspx?id=42642 live For Windows Forms applications, improvements were made for high DPI scenarios. For ASP.NET, higher reliability HTTP header inspection and modification methods are available as is a new way to schedule background asynchronous worker tasks. .NET Framework 4.6 .NET Framework 4.6 was announced on 12 November 2014.https://devblogs.microsoft.com/dotnet/announcing-net-2015-preview-a-new-era-for-net/ Announcing .NET 2015 Preview: A New Era for .NET .NET Team 12 November 2014 27 February 2015 9 May 2019 https://web.archive.org/web/20190509050512/https://devblogs.microsoft.com/dotnet/announcing-net-2015-preview-a-new-era-for-net/ live It was released on 20 July 2015.Lander Rich Announcing .NET Framework 4.6 http://blogs.msdn.com/b/dotnet/archive/2015/07/20/announcing-net-framework-4-6 .NET Blog Microsoft 20 July 2015 The team is updating the System.Security.Cryptography APIs to support the Windows CNG cryptography APIs [...] since it supports modern cryptography algorithms [Suite B Support], which are important for certain categories of apps. 20 July 2015 8 October 2021 https://web.archive.org/web/20211008175725/https://devblogs.microsoft.com/dotnet/announcing-net-framework-4-6/ live It supports a new just-in-time compiler (JIT) for 64-bit systems called RyuJIT, which features higher performance and support for SSE2 and AVX2 instruction sets. WPF and Windows Forms both have received updates for high DPI scenarios. Support for TLS 1.1 and TLS 1.2 has been added to WCF. This version requires Windows Vista SP2 or later..NET Framework System Requirements https://msdn.microsoft.com/en-us/library/8z6watww(v=vs.110).aspx MSDN Microsoft 18 August 2016 6 August 2016 https://web.archive.org/web/20160806131605/https://msdn.microsoft.com/en-us/library/8z6watww(v=vs.110).aspx live It is the last version to support Windows Vista SP2 and Windows Server 2008 SP2. The cryptographic API in .NET Framework 4.6 uses the latest version of Windows CNG cryptography API. As a result, NSA Suite B Cryptography is available to .NET Framework. Suite B consists of AES, the SHA-2 family of hashing algorithms, elliptic-curve Diffie–Hellman, and elliptic-curve DSA.CNG Features § Suite B Support https://msdn.microsoft.com/library/windows/desktop/bb204775.aspx#suite_b_support Cryptography API: Next Generation Microsoft 1 January 2016 4 April 2016 https://web.archive.org/web/20160404142617/https://msdn.microsoft.com/library/windows/desktop/bb204775.aspx#suite_b_support live .NET Framework 4.6 is supported on Windows Vista (with Service Pack 2), Server 2008 (with Service Pack 2), 7 (with Service Pack 1), Server 2008 R2 (with Service Pack 1), 8, Server 2012, 8.1, Server 2012 R2, 10 and Server 2016. Support for .NET Framework 4.6 ended on 26 April 2022. .NET Framework 4.6.1 The release of .NET Framework 4.6.1 was announced on 30 November 2015..NET Framework 4.6.1 is now available! https://blogs.msdn.microsoft.com/dotnet/2015/11/30/net-framework-4-6-1-is-now-available/ MSDN Blogs 30 November 2015 Microsoft 19 February 2016 27 August 2016 https://web.archive.org/web/20160827123538/https://blogs.msdn.microsoft.com/dotnet/2015/11/30/net-framework-4-6-1-is-now-available/ live This version requires Windows 7 SP1 or later. It is the last version to support Windows 8. New features and APIs include: WPF improvements for spell check, support for per-user custom dictionaries and improved touch performance. Enhanced support for Elliptic-Curve Digital Signature Algorithm (ECDSA) X509 certificates. Added support in SQL Connectivity for AlwaysOn, Always Encrypted and improved connection open resiliency when connecting to Azure SQL Database. Azure SQL Database now supports distributed transactions using the updated System.Transactions APIs . Many other performance, stability, and reliability related fixes in RyuJIT, GC, WPF and WCF. .NET Framework 4.6.2 The preview of .NET Framework 4.6.2 was announced on 30 March 2016.Announcing the .NET Framework 4.6.2 Preview https://blogs.msdn.microsoft.com/dotnet/2016/03/30/announcing-the-net-framework-4-6-2-preview/ .NET Blog 30 March 2016 Microsoft 3 August 2016 10 July 2018 https://web.archive.org/web/20180710164840/https://blogs.msdn.microsoft.com/dotnet/2016/03/30/announcing-the-net-framework-4-6-2-preview/ live It was released on 2 August 2016.Announcing .NET Framework 4.6.2 https://blogs.msdn.microsoft.com/dotnet/2016/08/02/announcing-net-framework-4-6-2/ .NET Blog 2 August 2016 Microsoft 3 August 2016 24 October 2016 https://web.archive.org/web/20161024011115/https://blogs.msdn.microsoft.com/dotnet/2016/08/02/announcing-net-framework-4-6-2/ live This version requires Windows 7 SP1 or later. It is the last version to support Windows 10 (RTM–v1511). New features include: Support for paths longer than 260 characters Support for FIPS 186-3 DSA in X.509 certificates TLS 1.1/1.2 support for ClickOnce Support for localization of data annotations in ASP.NET Enabling .NET desktop apps with Project Centennial Soft keyboard and per-monitor DPI support for WPF .NET Framework 4.6.2 is the first version to enable Transport Layer Security versions 1.1 and 1.2 by default. Applications on prior releases were required to explicitly opt into stronger cryptography – including Visual Studio itself.Miller Kendall 31 December 2019 Getting TLS 1.2 Support in .NET 2.0 and Later https://onloupe.com/blog/enabling-tls-1-2-with-dotnet-2-and-later/ 2026-05-23 LoupeHow to enable TLS encryption in .NET Framework 4 https://mohalogiciels.runasp.net/Tutorials/NetFrameworkTls.xht 2026-06-01 Moha Logiciels en 2026-05-31 This increasingly caused programs to be inoperable against servers requiring modern security protocols. Workarounds exist to enable the protocols system-wide.17 November 2020 Defaulting Your System to use TLS 1.2 for .NET Applications https://www.inflectra.com/Support/KnowledgeBase/KB510.aspx 2026-05-23 Inflectra en .NET Framework 4.6.2 is also shipped as Windows container image. .NET Framework 4.7 On 5 April 2017, Microsoft announced that .NET Framework 4.7 was integrated into Windows 10 Creators Update, promising a standalone installer for other Windows versions. An update for Visual Studio 2017 was released on this date to add support for targeting .NET Framework 4.7.Lander Rich Announcing the .NET Framework 4.7 https://blogs.msdn.microsoft.com/dotnet/2017/04/05/announcing-the-net-framework-4-7/ .NET Blog Microsoft 5 April 2017 28 April 2017 10 July 2018 https://web.archive.org/web/20180710163441/https://blogs.msdn.microsoft.com/dotnet/2017/04/05/announcing-the-net-framework-4-7/ live The promised standalone installer for Windows 7 and later was released on 2 May 2017,Microsoft .NET Framework 4.7 (Offline Installer) https://www.microsoft.com/en-us/download/details.aspx?id=55167 Download Center Microsoft 2 May 2017 4 May 2017 10 July 2018 https://web.archive.org/web/20180710163806/https://www.microsoft.com/en-us/download/details.aspx?id=55167 live but it had prerequisites not included with the package.The .NET Framework 4.7 installation is blocked on Windows 7, Windows Server 2008 R2 and Windows Server 2012 because of a missing d3dcompiler update https://support.microsoft.com/en-us/help/4020302/the-net-framework-4-7-installation-is-blocked-on-windows-7-windows-ser Support Microsoft 3 May 2017 28 May 2017 28 July 2018 https://web.archive.org/web/20180728150401/https://support.microsoft.com/en-us/help/4020302/the-net-framework-4-7-installation-is-blocked-on-windows-7-windows-ser live NET Framework 4.7 dropped support for Windows 8 and will only run on Windows 7 Service Pack 1 and later. New features in .NET Framework 4.7 include:What's New in the .NET Framework https://learn.microsoft.com/en-us/dotnet/framework/whats-new/#whats-new-in-net-framework-47 docs.microsoft.com Microsoft 28 April 2017 Enhanced cryptography with elliptic-curve cryptography Improve TLS support, especially for version 1.2 High-DPI awareness support in Windows Forms More support for touch and stylus in Windows Presentation Foundation (WPF) New print APIs for WPF .NET Framework 4.7 is supported on Windows 7 (with Service Pack 1), Server 2008 R2 (with Service Pack 1), Server 2012, 8.1, Server 2012 R2, 10, Server 2016 and Server 2019. .NET Framework 4.7 is also shipped as a Windows container image. .NET Framework 4.7.1 .NET Framework 4.7.1 was released on 17 October 2017.https://blogs.msdn.microsoft.com/dotnet/2017/10/17/announcing-the-net-framework-4-7-1/ Announcing the .NET Framework 4.7.1 Krishna Preeti 17 October 2017 .NET Blog Microsoft 10 January 2018 31 December 2017 https://web.archive.org/web/20171231121950/https://blogs.msdn.microsoft.com/dotnet/2017/10/17/announcing-the-net-framework-4-7-1/ live Amongst the fixes and new features, it corrects a d3dcompiler dependency issue.https://blogs.msdn.microsoft.com/dotnet/2017/10/17/announcing-the-net-framework-4-7-1/#comment-381526 Announcing the .NET Framework 4.7.1 microsoft.com 17 October 2017 10 January 2018 31 December 2017 https://web.archive.org/web/20171231121950/https://blogs.msdn.microsoft.com/dotnet/2017/10/17/announcing-the-net-framework-4-7-1/#comment-381526 live It also adds compatibility with the .NET Standard 2.0 out of the box.Immo Landwerth .NET Standard – .NET Framework 4.7.1 2017-09-27 https://www.youtube.com/watch?v=u67Eu_IgEMs 2018-04-25 19 September 2018 https://web.archive.org/web/20180919205350/https://www.youtube.com/watch?v=u67Eu_IgEMs live .NET Framework 4.7.1 is also shipped as a Windows container image. .NET Framework 4.7.2 .NET Framework 4.7.2 was released on 30 April 2018.https://blogs.msdn.microsoft.com/dotnet/2018/04/30/announcing-the-net-framework-4-7-2/ Announcing the .NET Framework 4.7.2 2018-06-12 en-US 12 June 2018 https://web.archive.org/web/20180612144949/https://blogs.msdn.microsoft.com/dotnet/2018/04/30/announcing-the-net-framework-4-7-2/ live Amongst the changes are improvements to ASP.NET, BCL, CLR, ClickOnce, Networking, SQL, WCF, Windows Forms, Workflow and WPF.https://docs.microsoft.com/en-us/dotnet/framework/whats-new/index#v472 What's new in the .NET Framework microsoft.com 12 June 2018 29 November 2017 https://web.archive.org/web/20171129170445/https://docs.microsoft.com/en-us/dotnet/framework/whats-new/index#v472 live This version is included with Server 2019. .NET Framework 4.7.2 is also shipped as a Windows container image. .NET Framework 4.8 .NET Framework 4.8 was released on 18 April 2019.https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-8/ Announcing the .NET Framework 4.8 2018-04-18 en-US 19 April 2019 https://web.archive.org/web/20190419141220/https://devblogs.microsoft.com/dotnet/announcing-the-net-framework-4-8/ livehttps://devblogs.microsoft.com/dotnet/upcoming-updates-for-net-framework-4-8/ Upcoming Updates for .NET Framework 4.8 2018-04-19 en-US 20 April 2019 https://web.archive.org/web/20190420052208/https://devblogs.microsoft.com/dotnet/upcoming-updates-for-net-framework-4-8/ live It was the final version of .NET Framework released after Windows Vista reached end of life on 11 April 2017, with future work going into the .NET Core platform that eventually became .NET 5 and onwards.2019-05-06 .NET Core is the Future of .NET https://devblogs.microsoft.com/dotnet/net-core-is-the-future-of-net/ 2020-06-06 .NET Blog en-US 1 June 2020 https://web.archive.org/web/20200601144344/https://devblogs.microsoft.com/dotnet/net-core-is-the-future-of-net/ live This release included JIT enhancements ported from .NET Core 2.1, High DPI enhancements for WPF applications, accessibility improvements, performance updates, and security enhancements.https://github.com/microsoft/dotnet/blob/master/releases/net48/README.md .NET Framework 4.8 Release Notes en-US 25 June 2019 11 May 2019 https://web.archive.org/web/20190511114502/https://github.com/Microsoft/dotnet/blob/master/releases/net48/README.md live Over five months after its release, an update for Visual Studio 2019 was released on 23 September 2019 to add support for targeting .NET Framework 4.8. It supported Windows 7 (with Service Pack 1), Server 2008 R2 (with Service Pack 1), Server 2012, 8.1, Server 2012 R2, 10, Server 2016 and Server 2019 and also shipped as a Windows container image. It is the last version to support Windows 7 SP1, Windows Server 2008 R2 SP1, Windows Server 2012, Windows 8.1, Windows Server 2012 R2, Windows 10 (v1607–1809), Windows Server 2016, Windows Server (v1709–1809) and Windows Server 2019, although it is only supported as included in Windows 10 (v1903–2004) and Windows Server (v1903–2004). The most-recent release is 4.8.0 Build 4115, with an offline installer size of 115 MB (121,346,568 bytes) and a digital signature date of 8 July 2024. .NET Framework 4.8.1 .NET Framework 4.8.1 was released on 9 August 2022. This version includes the native ARM64 support, WCAG2.1 compliant accessible tooltips, and accessibility improvements for Windows Forms. It is supported on Windows 10 (v20H2–22H2), Windows Server (v20H2), Windows Server 2022 and Windows 11. The most-recent release is 4.8.1 Build 9195, with an offline installer size of 74 MB (77,668,504 bytes) and a digital signature date of 28 September 2023. References 30em Category:2002 software Category:Microsoft application programming interfaces Category:Microsoft development tools Category:Software version histories