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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.^[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 with 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.

.NET Framework 4.8 was announced as the final 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.^[2][3] However, .NET Framework 4.8.1 was released in August 2022.^[4]

Overview

Overview of .NET Framework release history^[5][6][7][8]

Version	CLR	Release date	Support ended	Visual Studio	Included in		Can be installed on		Replaces
					Windows	Windows Server	Windows	Windows Server
1.0	1.0	2002-01-15[9][10]		Visual Studio .NET (2002)	—	—	NT 4.0 SP6a, 98, 98SE, Me, 2000, XP	NT 4.0 SP6a, 2000, 2003	—
1.0 SP1	↑	2002-03-19[11]			—	—	↑	↑	↑
1.0 SP2	↑	2002-08-07[12]			XP SP1	—	↑	↑	↑
1.0 SP3	↑	2004-08-30[13]	2009-07-14[14]		—	—	↑	↑	↑
1.1	1.1	2003-04-09[15]		Visual Studio .NET 2003	—	2003 (x86)	NT 4.0 SP6a, 98, 98SE, Me, 2000, XP, Vista	NT 4.0 SP6a, 2000, 2003 (x64), 2008	1.0[16]
1.1 SP1	↑	2004-08-30[13]	2013-10-08[14]		XP SP2, SP3	2003 SP1, SP2 (x86)	↑	↑	↑
2.0	2.0	2005-10-27[17]		Visual Studio 2005	—	2003 R2	98, 98SE, Me, 2000 SP3, XP SP2	2000 SP3, 2003	—
2.0 SP1	↑	2007-11-19[18]			—	2008	2000 SP4, XP SP2	2000 SP4, 2003 SP1	↑
2.0 SP2	↑	2008-08-11[19]	2011-07-12[14]		—	2008 SP2, 2008 R2	↑	↑	↑
3.0	2.0	2006-11-06[20]		Visual Studio 2008	Vista	—	XP SP2	2003 SP1	2.0
3.0 SP1	↑	2007-11-19[18]			Vista SP1	2008	↑	↑	↑
3.0 SP2	↑	2008-08-11[19]	2011-07-12[14]		Vista SP2	2008 SP2, 2008 R2	↑	↑	↑
3.5	2.0	2007-11-19[18]		Visual Studio 2008	—	—	XP SP2, Vista	2003 SP1, 2008	2.0, 3.0
3.5 SP1	↑	2008-08-11[19]	2029-01-09[14]	Visual Studio 2008 SP1	7, 8, 8.1, 10, 11	2008 R2, 2012, 2012 R2, v1709-v20H2, 2016-2022	↑	↑	↑
4.0	4	2010-04-12[21]	2016-01-12[14]	Visual Studio 2010	—	—	XP SP3, Vista SP1, 7	2003 SP2, 2008, 2008 R2	—
4.5	4	2012-08-15[22]	2016-01-12[14]	Visual Studio 2012	8	2012	Vista SP2, 7 SP1	2008 SP2, 2008 R2 SP1	4.0
4.5.1	4	2013-10-17[23]	2016-01-12[14]	Visual Studio 2013	8.1	2012 R2	Vista SP2, 7 SP1, 8	2008 SP2, 2008 R2 SP1, 2012	4.0, 4.5
4.5.2	4	2014-05-05[24]	2022-04-26[14]	Visual Studio 2015	—	—	Vista SP2, 7 SP1, 8, 8.1	2008 SP2, 2008 R2 SP1, 2012, 2012 R2	4.0-4.5.1
4.6	4	2015-07-20[25]	2022-04-26[14]	Visual Studio 2015	10 v1507	—	Vista SP2, 7 SP1, 8, 8.1 Update	2008 SP2, 2008 R2 SP1, 2012, 2012 R2 Update	4.0-4.5.2
4.6.1	4	2015-11-30[26]	2022-04-26[14]	Visual Studio 2015 Update 1	10 v1511	—	7 SP1, 8, 8.1 Update, 10 v1507	2008 R2 SP1, 2012, 2012 R2 Update	4.0-4.6
4.6.2	4	2016-08-02[27]	2027-01-12[14]	Visual Studio 2017 15.0	10 v1607	2016	7 SP1, 8.1 Update, 10 v1507-v1511	2008 R2 SP1, 2012, 2012 R2 Update	4.0-4.6.1
4.7	4	2017-04-05[28]	Same as parent OS[14]	Visual Studio 2017 15.1	10 v1703	—	7 SP1, 8.1 Update, 10 v1607	2008 R2 SP1, 2012, 2012 R2 Update, 2016	4.0-4.6.2
4.7.1	4	2017-10-17[29]		Visual Studio 2017 15.5	10 v1709	v1709	7 SP1, 8.1 Update, 10 v1607-v1703	2008 R2 SP1, 2012, 2012 R2 Update, 2016	4.0-4.7
4.7.2	4	2018-04-30[30]		Visual Studio 2017 15.8	10 v1803-v1809	v1803-v1809, 2019	7 SP1, 8.1 Update, 10 v1607-v1709	2008 R2 SP1, 2012, 2012 R2 Update, 2016, v1709	4.0-4.7.1
4.8	4	2019-04-18[31]		Visual Studio 2019 16.3	10 v1903-v22H2, 11 v21H2	v1903-v20H2, 2022	7 SP1, 8.1 Update, 10 v1607-v1809	2008 R2 SP1, 2012, 2012 R2 Update, 2016, v1803-v1809, 2019	4.0-4.7.2
4.8.1	4	2022-08-09[32]		Visual Studio 2022 17.3	11 v22H2-v23H2	—	10 v20H2-v22H2, 11 v21H2	2022	4.0-4.8

Notes:

.NET Framework 1.0

Zdroj:https://en.wikipedia.org?pojem=.NET_Framework_3.0
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