How do I detect what NET Framework versions and service packs are installed

Question

A similar question was asked here  but it was specific to  NET 3 5  Specifically  I m looking for the following    What is the correct way to determine which  NET Framework versions and service packs are installed  Is there a list of registry keys that can be used  Are there any dependencies between Framework versions

User · Answer

For a 64-bit OS  the path would be   HKEY LOCAL MACHINE SOFTWARE wow6432Node Microsoft NET Framework Setup NDP

User · Answer

There is an official Microsoft answer to this question at the following knowledge base article   Article ID  318785 - Last Review  November 7  2008 - Revision  20 1 How to determine which versions of the  NET Framework are installed and whether service packs have been applied  Unfortunately  it doesn t appear to work  because the mscorlib dll version in the 2 0 directory has a 2 0 version  and there is no mscorlib dll version in either the 3 0 or 3 5 directories even though 3 5 SP1 is installed     why would the official Microsoft answer be so misinformed

User · Answer

Update for  NET 4 5 1  Now that  NET 4 5 1 is available the actual value of the key named Release in the registry needs to be checked  not just its existence  A value of 378758 means that  NET Framework 4 5 1 is installed  However  as described here this value is 378675 on Windows 8 1

User · Answer

The Framework 4 beta installs to a differing registry key   using System  using System Collections ObjectModel  using Microsoft Win32   class Program       static void Main string   args                foreach Version ver in InstalledDotNetVersions                Console WriteLine ver            Console ReadKey                public static Collection lt Version gt  InstalledDotNetVersions                 Collection lt Version gt  versions   new Collection lt Version gt             RegistryKey NDPKey   Registry LocalMachine OpenSubKey   SOFTWARE Microsoft NET Framework Setup NDP            if  NDPKey    null                        string   subkeys   NDPKey GetSubKeyNames                foreach  string subkey in subkeys                                GetDotNetVersion NDPKey OpenSubKey subkey   subkey  versions                   GetDotNetVersion NDPKey OpenSubKey subkey  OpenSubKey  Client    subkey  versions                   GetDotNetVersion NDPKey OpenSubKey subkey  OpenSubKey  Full    subkey  versions                                   return versions             private static void GetDotNetVersion RegistryKey parentKey  string subVersionName  Collection lt Version gt  versions                if  parentKey    null                        string installed   Convert ToString parentKey GetValue  Install                 if  installed     1                                 string version   Convert ToString parentKey GetValue  Version                     if  string IsNullOrEmpty version                                         if  subVersionName StartsWith  v                            version   subVersionName Substring 1                       else                         version   subVersionName                                     Version ver   new Version version                    if   versions Contains ver                       versions Add ver

User · Answer

The Framework 4 beta installs to a differing registry key   using System  using System Collections ObjectModel  using Microsoft Win32   class Program       static void Main string   args                foreach Version ver in InstalledDotNetVersions                Console WriteLine ver            Console ReadKey                public static Collection lt Version gt  InstalledDotNetVersions                 Collection lt Version gt  versions   new Collection lt Version gt             RegistryKey NDPKey   Registry LocalMachine OpenSubKey   SOFTWARE Microsoft NET Framework Setup NDP            if  NDPKey    null                        string   subkeys   NDPKey GetSubKeyNames                foreach  string subkey in subkeys                                GetDotNetVersion NDPKey OpenSubKey subkey   subkey  versions                   GetDotNetVersion NDPKey OpenSubKey subkey  OpenSubKey  Client    subkey  versions                   GetDotNetVersion NDPKey OpenSubKey subkey  OpenSubKey  Full    subkey  versions                                   return versions             private static void GetDotNetVersion RegistryKey parentKey  string subVersionName  Collection lt Version gt  versions                if  parentKey    null                        string installed   Convert ToString parentKey GetValue  Install                 if  installed     1                                 string version   Convert ToString parentKey GetValue  Version                     if  string IsNullOrEmpty version                                         if  subVersionName StartsWith  v                            version   subVersionName Substring 1                       else                         version   subVersionName                                     Version ver   new Version version                    if   versions Contains ver                       versions Add ver

User · Answer

There is a GUI tool available  ASoft  NET Version Detector  which has always proven highly reliable  It can create XML files by specifying the file name of the XML output on the command line   You could use this for automation  It is a tiny program  written in a non- NET dependent language and does not require installation

User · Answer

Using the Signum Utilities library from SignumFramework  which you can use stand-alone   you can get it nicely and without dealing with the registry by yourself   AboutTools FrameworkVersions   ToConsole      Writes in my machine    v2 0 50727 SP2   v3 0 SP2   v3 5 SP1

User · Answer

In Windows 7  it should work for Windows nbsp 8 also  but I haven t tested it    Go to a command prompt  Steps to go to a command prompt    Click Start Menu In Search Box  type  cmd   without quotes  Open cmd exe   In cmd  type this command  wmic  namespace   root cimv2 path win32 product where  name like     NET     get version   This gives the latest version of NET Framework installed   One can also try Raymond cc Utilties for the same

User · Answer

The registry is the official way to detect if a specific version of the Framework is installed      Which registry keys are needed change depending on the Framework version you are looking for    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft  NETFramework Policy v1 0 3705  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322 Install  2 0                HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Install  3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 Setup InstallSuccess  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 Install  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Client Install 4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Full Install   Generally you are looking for    Install  dword 00000001   except for  NET 1 0  where the value is a string  REG SZ  rather than a number  REG DWORD    Determining the service pack level follows a similar pattern    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft Active Setup Installed Components  78705f0d-e8db-4b2d-8193-982bdda15ecd  Version  1 0 1              HKLM Software Microsoft Active Setup Installed Components  FDC11A6F-17D1-48f9-9EA3-9051954BAA24  Version  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322 SP  2 0                HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 SP  3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 SP  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 SP  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Client Servicing 4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Full Servicing   1  Windows Media Center or Windows XP Tablet Edition   As you can see  determining the SP level for  NET 1 0 changes if you are running on Windows Media Center or Windows XP Tablet Edition  Again   NET 1 0 uses a string value while all of the others use a DWORD   For  NET 1 0 the string value at either of these keys has a format of             The last   is the Service Pack level   While I didn t explicitly ask for this  if you want to know the exact version number of the Framework you would use these registry keys    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft Active Setup Installed Components  78705f0d-e8db-4b2d-8193-982bdda15ecd  Version  1 0 1              HKLM Software Microsoft Active Setup Installed Components  FDC11A6F-17D1-48f9-9EA3-9051954BAA24  Version  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322  2 0 2              HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Version  2 0 3              HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Increment 3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 Version  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 Version  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Version  4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Version    1  Windows Media Center or Windows XP Tablet Edition  2   NET 2 0 SP1  3   NET 2 0 Original Release  RTM    Again   NET 1 0 uses a string value while all of the others use a DWORD   Additional Notes   for  NET 1 0 the string value at either of these keys has a format of             The          portion of the string is the Framework version  for  NET 1 1  we use the name of the registry key itself  which represents the version number  Finally  if you look at dependencies   NET 3 0 adds additional functionality to  NET 2 0 so both  NET 2 0 and  NET 3 0 must both evaulate as being installed to correctly say that  NET 3 0 is installed  Likewise   NET 3 5 adds additional functionality to  NET 2 0 and  NET 3 0  so  NET 2 0   NET 3 0  and  NET 3  should all evaluate to being installed to correctly say that  NET 3 5 is installed   NET 4 0 installs a new version of the CLR  CLR version 4 0  which can run side-by-side with CLR 2 0    Update for  NET 4 5  There won t be a v4 5 key in the registry if  NET 4 5 is installed  Instead you have to check if the HKLM Software Microsoft NET Framework Setup NDP v4 Full key contains a value called Release  If this value is present   NET 4 5 is installed  otherwise it is not  More details can be found here and here

User · Answer

The registry is the official way to detect if a specific version of the Framework is installed      Which registry keys are needed change depending on the Framework version you are looking for    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft  NETFramework Policy v1 0 3705  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322 Install  2 0                HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Install  3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 Setup InstallSuccess  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 Install  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Client Install 4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Full Install   Generally you are looking for    Install  dword 00000001   except for  NET 1 0  where the value is a string  REG SZ  rather than a number  REG DWORD    Determining the service pack level follows a similar pattern    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft Active Setup Installed Components  78705f0d-e8db-4b2d-8193-982bdda15ecd  Version  1 0 1              HKLM Software Microsoft Active Setup Installed Components  FDC11A6F-17D1-48f9-9EA3-9051954BAA24  Version  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322 SP  2 0                HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 SP  3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 SP  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 SP  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Client Servicing 4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Full Servicing   1  Windows Media Center or Windows XP Tablet Edition   As you can see  determining the SP level for  NET 1 0 changes if you are running on Windows Media Center or Windows XP Tablet Edition  Again   NET 1 0 uses a string value while all of the others use a DWORD   For  NET 1 0 the string value at either of these keys has a format of             The last   is the Service Pack level   While I didn t explicitly ask for this  if you want to know the exact version number of the Framework you would use these registry keys    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft Active Setup Installed Components  78705f0d-e8db-4b2d-8193-982bdda15ecd  Version  1 0 1              HKLM Software Microsoft Active Setup Installed Components  FDC11A6F-17D1-48f9-9EA3-9051954BAA24  Version  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322  2 0 2              HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Version  2 0 3              HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Increment 3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 Version  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 Version  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Version  4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Version    1  Windows Media Center or Windows XP Tablet Edition  2   NET 2 0 SP1  3   NET 2 0 Original Release  RTM    Again   NET 1 0 uses a string value while all of the others use a DWORD   Additional Notes   for  NET 1 0 the string value at either of these keys has a format of             The          portion of the string is the Framework version  for  NET 1 1  we use the name of the registry key itself  which represents the version number  Finally  if you look at dependencies   NET 3 0 adds additional functionality to  NET 2 0 so both  NET 2 0 and  NET 3 0 must both evaulate as being installed to correctly say that  NET 3 0 is installed  Likewise   NET 3 5 adds additional functionality to  NET 2 0 and  NET 3 0  so  NET 2 0   NET 3 0  and  NET 3  should all evaluate to being installed to correctly say that  NET 3 5 is installed   NET 4 0 installs a new version of the CLR  CLR version 4 0  which can run side-by-side with CLR 2 0    Update for  NET 4 5  There won t be a v4 5 key in the registry if  NET 4 5 is installed  Instead you have to check if the HKLM Software Microsoft NET Framework Setup NDP v4 Full key contains a value called Release  If this value is present   NET 4 5 is installed  otherwise it is not  More details can be found here and here

User · Answer

In Windows 7  it should work for Windows nbsp 8 also  but I haven t tested it    Go to a command prompt  Steps to go to a command prompt    Click Start Menu In Search Box  type  cmd   without quotes  Open cmd exe   In cmd  type this command  wmic  namespace   root cimv2 path win32 product where  name like     NET     get version   This gives the latest version of NET Framework installed   One can also try Raymond cc Utilties for the same

User · Answer

I was needing to find out just which version of  NET framework I had on my computer  and all I did was go to the control panel and select the  Uninstall a Program  option  After that  I sorted the programs by name  and found Microsoft  NET Framework 4 Client Profile

User · Answer

I was needing to find out just which version of  NET framework I had on my computer  and all I did was go to the control panel and select the  Uninstall a Program  option  After that  I sorted the programs by name  and found Microsoft  NET Framework 4 Client Profile

User · Answer

There is an official Microsoft answer to this question at the following knowledge base article   Article ID  318785 - Last Review  November 7  2008 - Revision  20 1 How to determine which versions of the  NET Framework are installed and whether service packs have been applied  Unfortunately  it doesn t appear to work  because the mscorlib dll version in the 2 0 directory has a 2 0 version  and there is no mscorlib dll version in either the 3 0 or 3 5 directories even though 3 5 SP1 is installed     why would the official Microsoft answer be so misinformed

User · Answer

Here is a PowerShell script to obtain installed  NET framework versions  function Get-KeyPropertyValue  key   property        if  key Property -contains  property                Get-ItemProperty  key PSPath -name  property   select -expand  property          function Get-VersionName  key        name   Get-KeyPropertyValue  key Version     sp   Get-KeyPropertyValue  key SP     install   Get-KeyPropertyValue  key Install    if  sp                     PSChildName   name SP  sp          else            PSChildName   name          function Get-FrameworkVersion     dir  hklm  SOFTWARE Microsoft NET Framework Setup NDP          PSChildName -like  v            if     Property -contains  Version                 Get-VersionName              else           parent              Get-ChildItem    PSPath                  versionName   Get-VersionName                    parent PSChildName   versionName                                     v4Directory    hklm  SOFTWARE Microsoft NET Framework Setup NDP v4 Full  if Test-Path  v4Directory         v4   Get-Item  v4Directory      version   Get-KeyPropertyValue  v4 Release     switch  version           378389    NET Framework 4 5   break           378675    NET Framework 4 5 1 installed with Windows 8 1 or Windows Server 2012 R2   break           378758    NET Framework 4 5 1 installed on Windows 8  Windows 7 SP1  or Windows Vista SP2   break           379893    NET Framework 4 5 2   break             393295  393297 -contains        NET Framework 4 6   break             394254  394271 -contains        NET Framework 4 6 1   break             394802  394806 -contains        NET Framework 4 6 2   break              It was written based on How to  Determine Which  NET Framework Versions Are Installed  Please use THE Get-FrameworkVersion   function to get information about installed  NET framework versions

User · Answer

There is a GUI tool available  ASoft  NET Version Detector  which has always proven highly reliable  It can create XML files by specifying the file name of the XML output on the command line   You could use this for automation  It is a tiny program  written in a non- NET dependent language and does not require installation

User · Answer

The registry is the official way to detect if a specific version of the Framework is installed      Which registry keys are needed change depending on the Framework version you are looking for    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft  NETFramework Policy v1 0 3705  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322 Install  2 0                HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Install  3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 Setup InstallSuccess  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 Install  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Client Install 4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Full Install   Generally you are looking for    Install  dword 00000001   except for  NET 1 0  where the value is a string  REG SZ  rather than a number  REG DWORD    Determining the service pack level follows a similar pattern    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft Active Setup Installed Components  78705f0d-e8db-4b2d-8193-982bdda15ecd  Version  1 0 1              HKLM Software Microsoft Active Setup Installed Components  FDC11A6F-17D1-48f9-9EA3-9051954BAA24  Version  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322 SP  2 0                HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 SP  3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 SP  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 SP  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Client Servicing 4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Full Servicing   1  Windows Media Center or Windows XP Tablet Edition   As you can see  determining the SP level for  NET 1 0 changes if you are running on Windows Media Center or Windows XP Tablet Edition  Again   NET 1 0 uses a string value while all of the others use a DWORD   For  NET 1 0 the string value at either of these keys has a format of             The last   is the Service Pack level   While I didn t explicitly ask for this  if you want to know the exact version number of the Framework you would use these registry keys    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft Active Setup Installed Components  78705f0d-e8db-4b2d-8193-982bdda15ecd  Version  1 0 1              HKLM Software Microsoft Active Setup Installed Components  FDC11A6F-17D1-48f9-9EA3-9051954BAA24  Version  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322  2 0 2              HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Version  2 0 3              HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Increment 3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 Version  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 Version  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Version  4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Version    1  Windows Media Center or Windows XP Tablet Edition  2   NET 2 0 SP1  3   NET 2 0 Original Release  RTM    Again   NET 1 0 uses a string value while all of the others use a DWORD   Additional Notes   for  NET 1 0 the string value at either of these keys has a format of             The          portion of the string is the Framework version  for  NET 1 1  we use the name of the registry key itself  which represents the version number  Finally  if you look at dependencies   NET 3 0 adds additional functionality to  NET 2 0 so both  NET 2 0 and  NET 3 0 must both evaulate as being installed to correctly say that  NET 3 0 is installed  Likewise   NET 3 5 adds additional functionality to  NET 2 0 and  NET 3 0  so  NET 2 0   NET 3 0  and  NET 3  should all evaluate to being installed to correctly say that  NET 3 5 is installed   NET 4 0 installs a new version of the CLR  CLR version 4 0  which can run side-by-side with CLR 2 0    Update for  NET 4 5  There won t be a v4 5 key in the registry if  NET 4 5 is installed  Instead you have to check if the HKLM Software Microsoft NET Framework Setup NDP v4 Full key contains a value called Release  If this value is present   NET 4 5 is installed  otherwise it is not  More details can be found here and here

User · Answer

Enumerate the subkeys of HKEY LOCAL MACHINE SOFTWARE Microsoft NET Framework Setup NDP  Each subkey is a  NET version  It should have Install 1 value if it s present on the machine  an SP value that shows the service pack and an MSI 1 value if it was installed using an MSI    NET 2 0 on Windows nbsp Vista doesn t have the last one for example  as it is part of the OS

User · Answer

The registry is the official way to detect if a specific version of the Framework is installed      Which registry keys are needed change depending on the Framework version you are looking for    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft  NETFramework Policy v1 0 3705  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322 Install  2 0                HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Install  3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 Setup InstallSuccess  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 Install  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Client Install 4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Full Install   Generally you are looking for    Install  dword 00000001   except for  NET 1 0  where the value is a string  REG SZ  rather than a number  REG DWORD    Determining the service pack level follows a similar pattern    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft Active Setup Installed Components  78705f0d-e8db-4b2d-8193-982bdda15ecd  Version  1 0 1              HKLM Software Microsoft Active Setup Installed Components  FDC11A6F-17D1-48f9-9EA3-9051954BAA24  Version  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322 SP  2 0                HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 SP  3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 SP  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 SP  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Client Servicing 4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Full Servicing   1  Windows Media Center or Windows XP Tablet Edition   As you can see  determining the SP level for  NET 1 0 changes if you are running on Windows Media Center or Windows XP Tablet Edition  Again   NET 1 0 uses a string value while all of the others use a DWORD   For  NET 1 0 the string value at either of these keys has a format of             The last   is the Service Pack level   While I didn t explicitly ask for this  if you want to know the exact version number of the Framework you would use these registry keys    Framework Version  Registry Key ------------------------------------------------------------------------------------------ 1 0                HKLM Software Microsoft Active Setup Installed Components  78705f0d-e8db-4b2d-8193-982bdda15ecd  Version  1 0 1              HKLM Software Microsoft Active Setup Installed Components  FDC11A6F-17D1-48f9-9EA3-9051954BAA24  Version  1 1                HKLM Software Microsoft NET Framework Setup NDP v1 1 4322  2 0 2              HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Version  2 0 3              HKLM Software Microsoft NET Framework Setup NDP v2 0 50727 Increment 3 0                HKLM Software Microsoft NET Framework Setup NDP v3 0 Version  3 5                HKLM Software Microsoft NET Framework Setup NDP v3 5 Version  4 0 Client Profile HKLM Software Microsoft NET Framework Setup NDP v4 Version  4 0 Full Profile   HKLM Software Microsoft NET Framework Setup NDP v4 Version    1  Windows Media Center or Windows XP Tablet Edition  2   NET 2 0 SP1  3   NET 2 0 Original Release  RTM    Again   NET 1 0 uses a string value while all of the others use a DWORD   Additional Notes   for  NET 1 0 the string value at either of these keys has a format of             The          portion of the string is the Framework version  for  NET 1 1  we use the name of the registry key itself  which represents the version number  Finally  if you look at dependencies   NET 3 0 adds additional functionality to  NET 2 0 so both  NET 2 0 and  NET 3 0 must both evaulate as being installed to correctly say that  NET 3 0 is installed  Likewise   NET 3 5 adds additional functionality to  NET 2 0 and  NET 3 0  so  NET 2 0   NET 3 0  and  NET 3  should all evaluate to being installed to correctly say that  NET 3 5 is installed   NET 4 0 installs a new version of the CLR  CLR version 4 0  which can run side-by-side with CLR 2 0    Update for  NET 4 5  There won t be a v4 5 key in the registry if  NET 4 5 is installed  Instead you have to check if the HKLM Software Microsoft NET Framework Setup NDP v4 Full key contains a value called Release  If this value is present   NET 4 5 is installed  otherwise it is not  More details can be found here and here

User · Answer

For a 64-bit OS  the path would be   HKEY LOCAL MACHINE SOFTWARE wow6432Node Microsoft NET Framework Setup NDP

User · Answer

Here is a PowerShell script to obtain installed  NET framework versions  function Get-KeyPropertyValue  key   property        if  key Property -contains  property                Get-ItemProperty  key PSPath -name  property   select -expand  property          function Get-VersionName  key        name   Get-KeyPropertyValue  key Version     sp   Get-KeyPropertyValue  key SP     install   Get-KeyPropertyValue  key Install    if  sp                     PSChildName   name SP  sp          else            PSChildName   name          function Get-FrameworkVersion     dir  hklm  SOFTWARE Microsoft NET Framework Setup NDP          PSChildName -like  v            if     Property -contains  Version                 Get-VersionName              else           parent              Get-ChildItem    PSPath                  versionName   Get-VersionName                    parent PSChildName   versionName                                     v4Directory    hklm  SOFTWARE Microsoft NET Framework Setup NDP v4 Full  if Test-Path  v4Directory         v4   Get-Item  v4Directory      version   Get-KeyPropertyValue  v4 Release     switch  version           378389    NET Framework 4 5   break           378675    NET Framework 4 5 1 installed with Windows 8 1 or Windows Server 2012 R2   break           378758    NET Framework 4 5 1 installed on Windows 8  Windows 7 SP1  or Windows Vista SP2   break           379893    NET Framework 4 5 2   break             393295  393297 -contains        NET Framework 4 6   break             394254  394271 -contains        NET Framework 4 6 1   break             394802  394806 -contains        NET Framework 4 6 2   break              It was written based on How to  Determine Which  NET Framework Versions Are Installed  Please use THE Get-FrameworkVersion   function to get information about installed  NET framework versions

User · Answer

See How to  Determine Which  NET Framework Versions Are Installed  MSDN    MSDN proposes one function example that seems to do the job for version 1-4  According to the article  the method output is   v2 0 50727  2 0 50727 4016  SP2 v3 0  3 0 30729 4037  SP2 v3 5  3 5 30729 01  SP1 v4   Client  4 0 30319   Full  4 0 30319   Note that for  versions 4 5 and later  there is another function

User · Answer

Using the Signum Utilities library from SignumFramework  which you can use stand-alone   you can get it nicely and without dealing with the registry by yourself   AboutTools FrameworkVersions   ToConsole      Writes in my machine    v2 0 50727 SP2   v3 0 SP2   v3 5 SP1

User · Answer

I wanted to detect for the presence of  NET version 4 5 2 installed on my system  and I found no better solution than ASoft  NET Version Detector   Snapshot of this tool showing different  NET versions

User · Answer

I wanted to detect for the presence of  NET version 4 5 2 installed on my system  and I found no better solution than ASoft  NET Version Detector   Snapshot of this tool showing different  NET versions

User · Answer

Enumerate the subkeys of HKEY LOCAL MACHINE SOFTWARE Microsoft NET Framework Setup NDP  Each subkey is a  NET version  It should have Install 1 value if it s present on the machine  an SP value that shows the service pack and an MSI 1 value if it was installed using an MSI    NET 2 0 on Windows nbsp Vista doesn t have the last one for example  as it is part of the OS

User · Answer

Enumerate the subkeys of HKEY LOCAL MACHINE SOFTWARE Microsoft NET Framework Setup NDP  Each subkey is a  NET version  It should have Install 1 value if it s present on the machine  an SP value that shows the service pack and an MSI 1 value if it was installed using an MSI    NET 2 0 on Windows nbsp Vista doesn t have the last one for example  as it is part of the OS

User · Answer

Enumerate the subkeys of HKEY LOCAL MACHINE SOFTWARE Microsoft NET Framework Setup NDP  Each subkey is a  NET version  It should have Install 1 value if it s present on the machine  an SP value that shows the service pack and an MSI 1 value if it was installed using an MSI    NET 2 0 on Windows nbsp Vista doesn t have the last one for example  as it is part of the OS

User · Answer

See How to  Determine Which  NET Framework Versions Are Installed  MSDN    MSDN proposes one function example that seems to do the job for version 1-4  According to the article  the method output is   v2 0 50727  2 0 50727 4016  SP2 v3 0  3 0 30729 4037  SP2 v3 5  3 5 30729 01  SP1 v4   Client  4 0 30319   Full  4 0 30319   Note that for  versions 4 5 and later  there is another function

User · Answer

Update for  NET 4 5 1  Now that  NET 4 5 1 is available the actual value of the key named Release in the registry needs to be checked  not just its existence  A value of 378758 means that  NET Framework 4 5 1 is installed  However  as described here this value is 378675 on Windows 8 1

[.net] How do I detect what .NET Framework versions and service packs are installed?

Examples related to .net

Examples related to installation

Examples related to version-detection