.NET Framework version history

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.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 2000 the first beta versions of .NET 1.0 were released.[1] 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 the first version, Microsoft has released nine more upgrades for .NET Framework, seven of which have been released along a new version of Visual Studio. Two of these upgrades, .NET Framework 2.0 and 4.0, have upgraded Common Language Runtime (CLR). New versions of .NET Framework replace older versions when the CLR version is the same.

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.

Overview

Overview of .NET Framework release history[2][3]
Version
number		 CLR
version		 Release
date		 Development tool Included in Replaces
Windows Windows Server
1.0 1.0 2002-02-13 Visual Studio .NET[4] XP[a] N/A N/A
1.1 1.1 2003-04-24 Visual Studio .NET 2003[4] N/A 2003 1.0[5]
2.0 2.0 2005-11-07 Visual Studio 2005[6] N/A 2003, 2003 R2,[7] 2008 SP2, 2008 R2 SP1 N/A
3.0 2.0 2006-11-06 Expression Blend[8][b] Vista 2008 SP2, 2008 R2 SP1 2.0[2]
3.5 2.0 2007-11-19 Visual Studio 2008[9] 7, 8[c], 8.1[c], 10[c] 2008 R2 SP1 2.0, 3.0[2]
4.0 4 2010-04-12 Visual Studio 2010[10] N/A N/A N/A
4.5 4 2012-08-15 Visual Studio 2012[11] 8 2012 4.0[2]
4.5.1 4 2013-10-17 Visual Studio 2013[12] 8.1 2012 R2 4.0, 4.5[2]
4.5.2 4 2014-05-05 N/A N/A N/A 4.0–4.5.1[2]
4.6 4 2015-07-20 Visual Studio 2015[13] 10 N/A 4.0–4.5.2[2]
4.6.1 4 2015-11-17[14] Visual Studio 2015 Update 1 10 Version 1511 N/A 4.0–4.6[2]

Notes:

a.^ .NET Framework 1.0 is integral OS component of Windows XP Media Center edition or Tablet PC edition. Installation CDs for the Home editions and the Professional editions of Windows XP SP1, SP2 or SP3 comes with .NET Framework installation packages.[3]
b.^ Expression Blend only covers the Windows Presentation Foundation part of .NET Framework 3.0.
c.^ ^ ^ .NET Framework 3.5 is not automatically installed with Windows 8, 8.1 or 10. It must be installed either from a Windows installation media or from the Internet on demand. Control Panel always attempts the latter.[15]

.NET Framework 1.0

The first version of the .NET Framework was released on 13 February 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.[16]

.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 is the last version to support Windows NT 4.0.

Installing .NET Framework 1.1 also provides the system support for version 1.0, except in rare instances where an application will not run because it checks the version number of a library.[17]

Changes in 1.1 include:

  • 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 2.0

Version 2.0 was released on 22 January 2006. 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.[18] It was the last version to support Windows 98 and Windows Me.[19]

.NET Framework 2.0 with Service Pack 2 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 although there have been some unofficial workarounds to use a subset of the functionality from Version 3.5 in Windows 2000.[20]

Changes in 2.0 include:

.NET Framework 3.0

.NET Framework 3.0, formerly called WinFX,[21] was released on 21 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.[22] 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:

.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.[24]

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.[25]

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,[26] 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).

.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.[27] 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.[28]

.NET Framework 4

Key focuses for this release are:

History

Microsoft announced the intention to ship .NET Framework 4 on 29 September 2008. The Public Beta was released on 20 May 2009.[35]

On 28 July 2009, a second release of the .NET Framework 4 beta was made available with experimental software transactional memory support.[36] 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.[37] At the same time, Microsoft announced the expected launch date for .NET Framework 4 as 22 March 2010.[37] This launch date was subsequently delayed to 12 April 2010.[38]

On 10 February 2010, a release candidate was published: Version:RC.[39]

On 12 April 2010, the final version of .NET Framework 4.0 was launched alongside the final release of Microsoft Visual Studio 2010.[40]

On 18 April 2011, version 4.0.1 was released supporting some customer-demanded fixes for Windows Workflow Foundation.[41] Its design-time component, which requires Visual Studio 2010 SP1, adds a workflow state machine designer.[42]

On 19 October 2011, version 4.0.2 was released supporting some new features of Microsoft SQL Server.[43]

Version 4.0.3 was released on 4 March 2012.[44]

Windows Server AppFabric

After the release of the .NET Framework 4, Microsoft released a set of enhancements, named Windows Server AppFabric,[45] for application server capabilities in the form of AppFabric Hosting[46][47] and in-memory distributed caching support.

.NET Framework 4.5

.NET Framework 4.5 was released on 15 August 2012;[48] a set of new or improved features were added into this version.[49] The .NET Framework 4.5 is only supported on Windows Vista or later.[50][51] The .NET Framework 4.5 uses Common Language Runtime 4.0, with some additional runtime features.[52]

.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.[53]

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,[54][55] implementing futures and promises.

Managed Extensibility Framework (MEF)

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ASP.NET

Networking

.NET Framework 4.5.1

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The release of .NET Framework 4.5.1 was announced on 17 October 2013 along Visual Studio 2013.[56] This version requires Windows Vista SP2 and later[57] and is included with Windows 8.1 and Windows Server 2012 R2.

.NET Framework 4.5.2

The release of .NET Framework 4.5.2 was announced on 5 May 2014.[58] 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.[58]

.NET Framework 4.6

.NET Framework 4.6 was announced on 12 November 2014.[59] It was released on 20 July 2015.[60] 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.[60]

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.[60][61]

.NET Framework 4.6.1

The release of .NET Framework 4.6.1 was announced on 30 November 2015.[62]

References

  1. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  11. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  12. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  13. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  14. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  15. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  16. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  17. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  18. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  19. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  20. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  21. ↑ WinFX name change announcement Archived 21 June 2007 at WebCite
  22. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  23. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  24. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  25. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  26. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  27. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  28. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  29. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  30. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  31. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  32. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  33. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  34. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  35. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  36. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  37. ↑ 37.0 37.1 Lua error in package.lua at line 80: module 'strict' not found.
  38. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  39. ↑ http://www.infoworld.com/d/developer-world/microsoft-offers-visual-studio-2010-release-candidate-643 Archived 21 May 2010 at the Wayback Machine
  40. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  41. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  42. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  43. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  44. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  45. ↑ Windows Server AppFabric now Generally Available : AppFabric Blog : The Official Microsoft IIS Site
  46. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  47. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  48. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  49. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  50. ↑ Microsoft .NET Framework 4.5
  51. ↑ Standalone Installers .NET 4.5
  52. ↑ .NET Framework Versions and Dependencies
  53. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  54. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  55. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  56. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  57. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  58. ↑ 58.0 58.1 Lua error in package.lua at line 80: module 'strict' not found.
  59. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  60. ↑ 60.0 60.1 60.2 Lua error in package.lua at line 80: module 'strict' not found.
  61. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  62. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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