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Determine which versions and service pack levels of .NET Framework are installed

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This article helps you determine which version and service pack level of the Microsoft .NET Framework are installed.

Original product version:   .NET Framework 3.5 Service Pack 1
Original KB number:   318785

Use registry keys

Use the registry information below to determine which version(s) and service pack level(s) of the .NET Framework are installed.

To do it, following the steps below:

  1. Click Start, type regedit in the Search programs and files box (click Run and type regedit in the Run dialog box in Windows XP), and then press Enter.

  2. In the Registry Editor, locate the registry key name listed in the Registry keys for different .NET Framework and service packs section below, and check the value for the related .NET Framework.

    Check the registry key in Registry Editor.

Registry keys for different .NET Framework and service packs

.NET Framework Service Pack Level Registry Key Name Value
4.6.2 Original Release
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full
 Name: Release
Type: REG_DWORD
Data:
  • On Windows 10 Anniversary Update: 394802
  • On all other OS versions: 394806
4.6.1 Original Release
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full
 Name: Release
Type: REG_DWORD
Data:
  • On Windows 10 November Update systems: 394254
  • On all other OS versions: 394271
4.6 Original Release
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full
 Name: Release
Type: REG_DWORD
Data:
  • On Windows 10 systems: 393295
  • On all other OS versions: 393297
4.5.2 Original Release
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full
 Name: Release
Type: REG_DWORD
Data: 379893
4.5.1 Original Release
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full
 Name: Release
Type: REG_DWORD
Data:
  • On Windows 8.1 or Windows Server 2012 R2: 378675
  • On Windows 8, Windows 7 SP1, or Windows Vista SP2: 378758
4.5 Original Release
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full
 Name: Release
Type: REG_DWORD
Data: 378389
4 - Client Original Release HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client Name: Install
Type: REG_DWORD
Data: 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client Name: Version
Type: REG_SZ
Data: 4.0.30319.0
4 - Full Original Release HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full Name: Install
Type: REG_DWORD
Data: 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full Name: Version
Type: REG_SZ
Data: 4.0.30319.0
3.5 Original Release HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5 Name: Install
Type: REG_DWORD
Data: 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5 Name: SP
Type: REG_DWORD
Data: 0
3.5 Service Pack 1 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5 Name: Install
Type: REG_DWORD
Data: 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5 Name: SP
Type: REG_DWORD
Data: 1
3.0 Original Release Follow the deployment and detection guidance in Microsoft .NET Framework 3.0 Deployment Guide.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0 Name: SP
Type: REG_DWORD
Data: 0
3.0 Service Pack 1 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0 Name: Install
Type: REG_DWORD
Data: 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0 Name: SP
Type: REG_DWORD
Data: 1
3.0 Service Pack 2 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0 Name: Install
Type: REG_DWORD
Data: 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0 Name: SP
Type: REG_DWORD
Data: 2
2.0 Original Release HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727 Name: Install
Type: REG_DWORD
Data: 1
HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727 Name: SP
Type: REG_DWORD
Data: 0
2.0 Service Pack 1 HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727 Name: Install
Type: REG_DWORD
Data: 1
HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727 Name: SP
Type: REG_DWORD
Data: 1
2.0 Service Pack 2 HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727 Name: Install
Type: REG_DWORD
Data: 1
HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727 Name: SP
Type: REG_DWORD
Data: 2
1.1 (on 32-bit operating systems) Original Release HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v1.1.4322 Name: Install
Type: REG_DWORD
Data: 1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v1.1.4322 Name: SP
Type: REG_DWORD
Data: 0
1.1 (on 32-bit operating systems) Service Pack 1 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v1.1.4322 Name: Install
Type: REG_DWORD
Data: 1
1.1 (on 64-bit operating systems) Original Release HKLM\SOFTWARE\Wow6432Node\Microsoft\NET Framework Setup\NDP\v1.1.4322 Name: Install
Type: REG_DWORD
Data: 1
HKLM\SOFTWARE\Wow6432Node\Microsoft\NET Framework Setup\NDP\v1.1.4322 Name: SP
Type: REG_DWORD
Data: 0
1.1 (on 64-bit operating systems) Service Pack 1 HKLM\SOFTWARE\Wow6432Node\Microsoft\NET Framework Setup\NDP\v1.1.4322 Name: Install
Type: REG_DWORD
Data: 1
HKLM\SOFTWARE\Wow6432Node\Microsoft\NET Framework Setup\NDP\v1.1.4322 Name: SP
Type: REG_DWORD
Data: 1
1.0 (on supported platforms except for Windows XP Media Center and Tablet PC) Original Release HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{78705f0d-e8db-4b2d-8193-982bdda15ecd} Name: Version
Type: REG_SZ
Data: 1.0.3705.0
1.0 (on supported platforms except for Windows XP Media Center and Tablet PC) Service Pack 1 HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{78705f0d-e8db-4b2d-8193-982bdda15ecd} Name: Version
Type: REG_SZ
Data: 1.0.3705.1
1.0 (on supported platforms except for Windows XP Media Center and Tablet PC) Service Pack 2 HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{78705f0d-e8db-4b2d-8193-982bdda15ecd} Name: Version
Type: REG_SZ
Data: 1.0.3705.2
1.0 (on supported platforms except for Windows XP Media Center and Tablet PC) Service Pack 3 HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{78705f0d-e8db-4b2d-8193-982bdda15ecd} Name: Version
Type: REG_SZ
Data: 1.0.3705.3
1.0 (shipped with Windows XP Media Center 2002/2004 and Tablet PC 2004) Service Pack 2 HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{FDC11A6F-17D1-48f9-9EA3-9051954BAA24} Name: Version
Type: REG_SZ
Data: 1.0.3705.2
1.0 (shipped with Windows XP Media Center 2005 and Tablet PC 2005) Service Pack 3 HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{FDC11A6F-17D1-48f9-9EA3-9051954BAA24} Name: Version
Type: REG_SZ
Data: 1.0.3705.3

To detect the existence of a specific .NET Framework version regardless of the service pack level, or to detect a service pack level or a later service pack level of the same .NET Framework version, use the registry information that is listed in the following table.

.NET Framework Service Pack Level Registry Key Name Value
4 - Client Any Version HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client Install = 1
4 - Full Any Version HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full Install = 1
3.5 Any Version HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5 Install = 1
3.5 Service Pack 1 or Greater HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5 SP >=1
3.0 Any Version HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0 Install = 1
3.0 Service Pack 1 or Greater HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0 SP >= 1
3.0 Service Pack 2 or Greater HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0 SP >= 2
2.0 Any Version HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727 Install = 1
2.0 Service Pack 1 or Greater HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727 SP >= 1
2.0 Service Pack 2 or Greater HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727 SP >= 2
1.1 Any Version HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v1.1.4322 Install = 1
1.1 Service Pack 1 or Greater HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v1.1.4322 SP >= 1
1.0 Any Version HKEY_LOCAL_MACHINE\Software\Microsoft\.NET Framework\Policy\v1.0 Name: 3705, Type: REG_SZ, exists
1.0 (on supported platforms except for Windows XP Media Center and Tablet PC) Service Pack 1 or Greater HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{78705f0d-e8db-4b2d-8193-982bdda15ecd} Version >= 1.0.3705.1
1.0 (on supported platforms except for Windows XP Media Center and Tablet PC) Service Pack 2 or Greater HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{78705f0d-e8db-4b2d-8193-982bdda15ecd} Version >= 1.0.3705.2
1.0 (on supported platforms except for Windows XP Media Center and Tablet PC) Service Pack 3 or Greater HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{78705f0d-e8db-4b2d-8193-982bdda15ecd} Version >= 1.0.3705.3
1.0 (shipped with Windows XP Media Center 2002/2004 and Tablet PC 2004) Service Pack 2 or Greater HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{FDC11A6F-17D1-48f9-9EA3-9051954BAA24} Version >= 1.0.3705.2
1.0 (shipped with Windows XP Media Center 2005 and Tablet PC 2005) Service Pack 3 or Greater HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components\{FDC11A6F-17D1-48f9-9EA3-9051954BAA24} Version >= 1.0.3705.3

References