General information Basic general information about Windows. DOS-based (MS-DOS9x-based) Name Release date RTM Build Current version Status support LicenseSource model Codename MS-DOS version Kernel type Architecture Editions Type Notes Windows 1.0 1985-11-20 ? 1.04 (1987-04-08) Unsupported (2001-12-31) Closed source Microsoft EULA ? ? 16-bit Desktop First version of Windows Windows 2.0 1987-12-09 ? 2.03 (1987-12-09) Unsupported (2001-12-31) Closed source Microsoft EULA ? ? 16-bit Desktop Windows 2.1x 1988-05-27 ? 2.11 (1989-03-13) Unsupported (2001-12-31) Closed source Microsoft EULA ? ? 16-bit Desktop Windows 3.0 1990-05-22 ? 3.00a Multimedia Extensions (1991-10-20) Unsupported (2001-12-31) Closed source Microsoft EULA ? ? 16-bit Desktop Windows 3.1x 1992-04-06 040 3.11 (1993-12-31) Unsupported (2001-12-31) Closed source Microsoft EULA 3.1: Janus; for Workgroups: Kato nike juvenate rea , Sparta; 3.11: Snowball (LB) ? (OS or shell?) ? 16-bit (partial 32-bit compatibility with Win32s) Windows for Workgroups 3.1, Windows for Workgroups 3.11, Windows 3.2 (simplified Chinese only) Desktop Version number: 3.1.040 Windows 95 1995-08-24 950 4.00.950C OSR2.5 (1997-11-26) Unsupported (2001-12-31) Closed source Microsoft EULA Chicago MS-DOS 7.0, MS-DOS 7.1 (OSR2.x) Monolithic kernel Hybrid 1632-bit Retail, OSR1, OSR2, OSR2.1, OSR2.5 Desktop Version number: 4.00.950 Windows 98 1998-06-25 1998 4.10.2222A (1999-04-23) Unsupported (2006-07-11) Closed source Microsoft EULA Memphis MS-DOS 7.1 Monolithic kernel Hybrid 1632-bit First edition, Second Edition Desktop Version number: 4.10.1998 (Security Version 4.10.1998A) Windows Me 2000-06-19 3000 4.90.3000 (2000-09-14) Unsupported (2006-07-11) Closed source Microsoft EULA "Millennium" MS-DOS 8.0 Monolithic kernel Hybrid 1632-bit Desktop Version number: 4.90.3000 (Security Version 4.90.3000A) NT Kernel-based Name Release date RTM Build Current version Status support LicenseSource model Codename, working name Based on (kernel) Supported architectures Editions OS type Windows NT 3.1 1993-07-27 528 3.10.528 SP3 (1994-11-10) Unsupported (2001-12-31) Closed source Microsoft EULA ? NT 3.1 x86-32, DEC Alpha, MIPS Workstation, Advanced Server Workstation, Server Windows NT 3.5 1994-09-21 807 3.50.807 SP3 (1995-06-21) Unsupported (2001-12-31) Closed source Microsoft EULA Daytona NT 3.5 x86-32, DEC Alpha, MIPS Workstation, Server Workstation, Server Windows NT 3.51 1995-05-30 1057 3.51.1057 SP5 (1996-09-19) Unsupported (2001-12-31) Closed source Microsoft EULA ? NT 3.51 x86-32, DEC Alpha, MIPS, PowerPC Workstation, Server Workstation, Server Windows NT 4.0 1996-08-24 1381 4.00.1381 SP6a (1999-11-30) Unsupported (2004-12-31) Closed source Microsoft EULA Cairo Hydra (Terminal Server) NT 4.0 x86-32, DEC Alpha, MIPS, PowerPC Workstation, Server, Server Enterprise Edition, Terminal Server, Embedded Workstation nike juvenate sverige , Server, Embedded Windows 2000 2000-02-17 2195 5.0 SP4 Rollup 1 v2 (2005-09-13) Extended Support Period (2010-07-13) Shared source Microsoft EULA Memphis NT, Whistler 2000 NT 5.0 x86-32, IA-64 Professional, Server, Advanced Server, Datacenter Server Desktop, Workstation, Server Windows XP 2001-10-25 2600 5.1.2600 SP3 (2008-04-21) Extended Support Period (2014-04-08) Shared source Microsoft EULA Whistler NT 5.1; NT 5.2 (64-bit 2003 and x64) x86-32, IA-64, x86-64 Starter Edition, Home, Professional, Media Center, Tablet PC, Starter, Embedded, Home N, Home K, Home KN, Professional N, Professional K, Professional KN, Professional x64 Desktop, Workstation, Embedded Windows Server 2003 2003-04-24 3790 5.2.3790 SP2 (2007-03-13) Supported Shared source Microsoft EULA Whistler Server, Windows .NET Server NT 5.2 x86-32, IA-64, x86-64 Standard, Enterprise nike huarache rea , Datacenter, Web, Storage, Small Business Server, Compute Cluster Server, Network Appliance, Embedded, HPC Windows Fundamentals for Legacy PCs 2006-07-08 2600 RTM (2006-07-08) Supported Shared source Microsoft EULA Eiger, Monch NT 5.1 x86-32 Fundamentals for Legacy PCs Desktop Windows Vista 2006-11-08 6000 (SP2: 6002) 6.0 SP2 (2008-02-04) Supported Closed source, Shared source Microsoft EULA Longhorn NT 6.0 x86-32, x86-64 Starter, Home Basic,Home Basic N, Home Basic K, Home Basic KN, Home Premium, Home Premium K, Home Premium KN, Business, Business N, Business K, Business KN, Enterprise, Enterprise K, Enterprise KN, Ultimate, Ultimate K, Ultimate KN Desktop, Workstation Windows Server 2008 2008-02-27 6001 6.0 SP2 (2008-02-27) Supported Closed source, Shared source Microsoft EULA Longhorn Server NT 6.0 x86-32 nike huarache sverige , IA-64, x86-64 Web, Standard, Enterprise, Small Business Server, Datacenter, Web Core, Standard Core, Enterprise Core, Datacenter Core, Standard without HyperV, Enterprise without HyperV, Datacenter without HyperV, Standard Core without HyperV, Enterprise Core without HyperV, Datacenter Core without HyperV, HPC, HyperV Core, Foundation, Storage Server Windows Home Server 2007-06-16 3790 5.2 Supported Closed source Microsoft EULA Q, Quattro NT 5.2 x86-32, x86-64 Home Server Server Windows 7 2009-10-22 7600 6.1 Supported Closed source, Shared source Microsoft EULA "7" NT 6.1 x86-32, x86-64 Starter, Home Basic, Home Premium, Professional, Ultimate, Enterprise, Starter N nike air max flyknit dam , Home Basic N, Home Premium N, Professional N, Ultimate N, Enterprise N, Starter K, Home Basic K, Home Premium K, Professional K, Ultimate K, Enterprise K, Starter KN, Home Basic KN, Home Premium KN, Professional KN, Ultimate KN, Enterprise KN, Starter E, Home Basic E, Home Premium E, Professional E, Ultimate E, Enterprise E Desktop, Workstation, Mul? 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