PowerShell script to return versions of NET Framework on a machine

Question

What would a PowerShell script be to return versions of the  NET Framework on a machine   My first guess is something involving WMI  Is there something better   It should be a one-liner to return only the latest version for each installation of  NET  on each line

User · Answer

This is a derivite of previous post  but this gets the latest version of the  net framework 4 in my tests   get-itemproperty -name version release  hklm  SOFTWARE Microsoft NET Framework Setup NDP v4 FULL    Which will allow you to invoke-command to remote machine   invoke-command -computername server01 -scriptblock  get-itemproperty -name version release  hklm  SOFTWARE Microsoft NET Framework Setup NDP v4 FULL    select pscomputername version release     Which sets up this possibility with ADModule and naming convention prefix   get-adcomputer -Filter  name -like   prefix         invoke-command -computername    name -scriptblock  get-itemproperty -name version release  hklm  SOFTWARE Microsoft NET Framework Setup NDP v4 FULL    select pscomputername version release    ft

User · Answer

Here s my take on this question following the msft documentation    gpParams          Path           HKLM  SOFTWARE Microsoft NET Framework Setup NDP v4 Full      ErrorAction    SilentlyContinue     release   Get-ItemProperty  gpParams   Select-Object -ExpandProperty Release    NET Framework       switch   release                  -ge 528040        4 8   break                 -ge 461808        4 7 2   break                 -ge 461308        4 7 1   break                 -ge 460798        4 7   break                 -ge 394802        4 6 2   break                 -ge 394254        4 6 1   break                 -ge 393295        4 6   break                 -ge 379893        4 5 2   break                 -ge 378675        4 5 1   break                 -ge 378389        4 5   break           default      4 5  not installed                This example works with all PowerShell versions and will work in perpetuity as 4 8 is the last  NET Framework version

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If you have installed Visual Studio on your machine then open the Visual Studio Developer Command Prompt and type the following command  clrver  It will list all the installed versions of  NET Framework on that machine

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There s no reliable way to do this for all platforms and architectures using a simple script  If you want to learn how to do it reliably  start at the blog post Updated sample  NET Framework detection code that does more in-depth checking

User · Answer

gci  HKLM  SOFTWARE Microsoft NET Framework Setup NDP    sort pschildname -des                                    select -fi 1 -exp pschildname   This answer doesn t return 4 5 if that is installed  The answer below from  Jaykul and using recurse does

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Added v4 8 support to the script   Get-ChildItem  HKLM  SOFTWARE Microsoft NET Framework Setup NDP  -recurse   Get-ItemProperty -name Version Release -EA 0   Where      PSChildName -match       SW   p L      Select PSChildName  Version  Release       name  Product    expression         switch -regex     Release             378389     Version  4 5             378675 378758     Version  4 5 1             379893     Version  4 5 2             393295 393297     Version  4 6             394254 394271     Version  4 6 1             394802 394806     Version  4 6 2             460798 460805     Version  4 7             461308 461310     Version  4 7 1             461808 461814     Version  4 7 2             528040 528049     Version  4 8                -gt 528049     Version  Undocumented version   gt  4 8   please update script

User · Answer

Refer to the page Script for finding which  NET versions are installed on remote workstations   The script there might be useful to find the  NET version for multiple machines on a network

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Here s the general idea   Get child items in the  NET Framework directory that are containers whose names match  the pattern v number dot number  Sort them by descending name  take the first object  and return its name property   Here s the script    Get-ChildItem -Path  Env windir Microsoft NET Framework   Where-Object     PSIsContainer -eq  true     Where-Object     Name -match  v d   d     Sort-Object -Property Name -Descending   Select-Object -First 1  Name

User · Answer

I would try this one in PowerShell  Worked for me    Get-ItemProperty  HKLM Software Microsoft NET Framework Setup NDP v4 Full   Version

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I found this through tab completion in powershell for osx    System Runtime InteropServices RuntimeInformation   get FrameworkDescription    NET Core 4 6 25009 03

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I m not up on my PowerShell syntax  but I think you could just call System Runtime InteropServices RuntimeEnvironment GetSystemVersion    This will return the version as a string  something like v2 0 50727  I think

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If you re going to use the registry you have to recurse in order to get the full version for the 4 x Framework  The earlier answers both return the root number on my system for  NET 3 0  where the WCF and WPF numbers  which are nested under 3 0  are higher -- I can t explain that   and fail to return anything for 4 0       EDIT  For  Net 4 5 and up  this changed slightly again  so there s now a nice MSDN article here explaining how to convert the Release value to a  Net version number  it s a total train wreck  -   This looks right to me  note that it outputs separate version numbers for WCF  amp  WPF on 3 0  I don t know what that s about   It also outputs both Client and Full on 4 0  if you have them both installed    Get-ChildItem  HKLM  SOFTWARE Microsoft NET Framework Setup NDP  -recurse   Get-ItemProperty -name Version Release -EA 0   Where      PSChildName -match      S  p L      Select PSChildName  Version  Release   Based on the MSDN article  you could build a lookup table and return the marketing product version number for releases after 4 5    Lookup          378389    version  4 5      378675    version  4 5 1      378758    version  4 5 1      379893    version  4 5 2      393295    version  4 6      393297    version  4 6      394254    version  4 6 1      394271    version  4 6 1      394802    version  4 6 2      394806    version  4 6 2      460798    version  4 7      460805    version  4 7      461308    version  4 7 1      461310    version  4 7 1      461808    version  4 7 2      461814    version  4 7 2      528040    version  4 8      528049    version  4 8       For One True framework  latest  NET 4x   change the Where-Object match    to PSChildName -eq  Full   Get-ChildItem  HKLM  SOFTWARE Microsoft NET Framework Setup NDP  -Recurse     Get-ItemProperty -name Version  Release -EA 0     Where-Object      PSChildName -match      S  p L        Select-Object   name     NET Framework   expression       PSChildName       name    Product   expression     Lookup    Release      Version  Release   In fact  since I keep having to update this answer  here s a script to generate the script above  with a little extra  from the markdown source for that web page  This will probably break at some point  so I m keeping the current copy above     Get the text from github  url    https   raw githubusercontent com dotnet docs master docs framework migration-guide how-to-determine-which-versions-are-installed md   md   Invoke-WebRequest  url -UseBasicParsing  OFS     n    Replace the weird text in the tables  and the padding   Then trim the   off the front and end of lines  map    md -split   n  -replace   installed        -replace   s     -replace               Then we can build the table by looking for unique lines that start with   NET Framework      Select-String    NET    Select-Object -Unique         And flip it so it s key   value       And convert   NET FRAMEWORK 4 5 2  to   version 4 5 2     ForEach-Object             version  v   int  k      -replace    NET Framework   -split                    k    version   v            And output the whole script      Lookup       map      For extra effect we could get the Windows 10 OS version and build release id  try         WinRelease    WinVer   Get-ItemPropertyValue  HKLM  SOFTWARE Microsoft Windows NT CurrentVersion  ReleaseId  CurrentMajorVersionNumber  CurrentMinorVersionNumber  CurrentBuildNumber  UBR       WindowsVersion         WinVer -join         WinRelease     catch         WindowsVersion    System Environment   OSVersion Version    Get-ChildItem  HKLM  SOFTWARE Microsoft NET Framework Setup NDP  -Recurse       Get-ItemProperty -name Version  Release -EA 0         For The One True framework  latest  NET 4x   change match to PSChildName -eq  Full       Where-Object       PSChildName -match      S  p L          Select-Object   name     NET Framework   expression        PSChildName                       name    Product   expression      Lookup     Release                      Version  Release        Some OPTIONAL extra output  PSComputerName and WindowsVersion       The Computer name  so output from local machines will match remote machines         name    PSComputerName   expression      Env Computername          The Windows Version  works on Windows 10  at least          name    WindowsVersion   expression       WindowsVersion

User · Answer

This is purely because I had to spend time making editing this when it should be widely available  so I m providing it to everyone else  The below script will Output a couple of CSV files to TEMP with the versions and vulnerability status of each machine in a selected  in the code  OU  You ll be able to remotely  quot security audit quot  an OU of machines  Powershell 7 0 needed for the connection test line RSAT needed to get the AD module Visual Studio Code needed to get powershell 7 0  on win7  By the time you read this  the version list will probably be out of date within the file  Use this website https   docs microsoft com en-us dotnet framework migration-guide versions-and-dependencies to add newer dotnet entries  It s just a bunch of key values in  quot DotNet4Builds quot  If within CompromisedCheck csv a machine shows as  0  it s had it s security turned off manually  and you should raise whether the supplier did it  or a suspect employee  I hope this helps someone searching for it for their business        lt           Script Name   Get-DotNetVersions Tweaked ps1         Description   This script reports the various  NET Framework versions installed on the local or a remote set of computers         Author        Original by Martin Schvartzman - Edited by Mark Purnell         Reference     https   msdn microsoft com en-us library hh925568   gt    ErrorActionPreference    quot Continue    import-module ActiveDirectory  searchOU    quot OU OU LEVEL 1 OU OU LEVEL 2 OU MACHINES OU OUR LAPTOPS DC PUT DC MY DC DOMAIN DC CONTROLLER DC HERE DC OK quot   computerList   Get-ADComputer -searchbase  searchOU -Filter     function Get-DotNetFrameworkVersion  computerList         dotNetter            compromisedCheck                 dotNetRoot    SOFTWARE Microsoft  NETFramework       dotNetRegistry     SOFTWARE Microsoft NET Framework Setup NDP       dotNet4Registry    SOFTWARE Microsoft NET Framework Setup NDP v4 Full       dotNet4Builds               30319        Version    System Version  4 0                                                                 378389       Version    System Version  4 5                                                                 378675       Version    System Version  4 5 1      Comment     8 1 2012R2                                   378758       Version    System Version  4 5 1      Comment     8 7 SP1 Vista SP2                            379893       Version    System Version  4 5 2                                                               380042       Version    System Version  4 5        Comment    and later with KB3168275 rollup               393295       Version    System Version  4 6        Comment     Windows 10                                   393297       Version    System Version  4 6        Comment     NON Windows 10                               394254       Version    System Version  4 6 1      Comment     Windows 10                                   394271       Version    System Version  4 6 1      Comment     NON Windows 10                               394802       Version    System Version  4 6 2      Comment     Windows 10 Anniversary Update                394806       Version    System Version  4 6 2      Comment     NON Windows 10                               460798       Version    System Version  4 7        Comment     Windows 10 Creators Update                   460805       Version    System Version  4 7        Comment     NON Windows 10                               461308       Version    System Version  4 7 1      Comment     Windows 10 Fall Creators Update              461310       Version    System Version  4 7 1      Comment     NON Windows 10                               461808       Version    System Version  4 7 2      Comment     Windows 10 April  amp  Winserver                 461814       Version    System Version  4 7 2      Comment     NON Windows 10                               528040       Version    System Version  4 8        Comment     Windows 10 May 2019 Update               528049       Version    System Version  4 8        Comment     NON Windows 10                 foreach  computerObject in  computerList                 computerName    computerObject DNSHostName         write-host  quot PCName is  quot     computerName           if test-connection -TargetName  computerName -Quiet -TimeOutSeconds 1 -count 2               if  regKey    Microsoft Win32 RegistryKey   OpenRemoteBaseKey  LocalMachine    computerName                                             os    Get-WMIObject win32 operatingsystem -ComputerName SPL305350  Name                 if                           write-host  quot wim not available quot                        dotNetter    New-Object -TypeName PSObject -Property                             ComputerName     computerName                          OS     quot WIM not available quot                           Build     quot WIM not available quot                           Version     quot WIM not available quot                           Comment     quot WIM not available quot                                                          else                      if   netRegKey    regKey OpenSubKey  quot  dotNetRegistry quot                                                  foreach   versionKeyName in  netRegKey GetSubKeyNames                                                          if   versionKeyName -match   v 123                                       versionKey    netRegKey OpenSubKey  versionKeyName                                   version    System Version   versionKey GetValue  Version                                                                         write-host  quot adding old dotnet quot                                    dotNetter    New-Object -TypeName PSObject -Property                                            ComputerName    computerName                                         OS    os                                         Build    version Build                                         Version    version                                         Comment                                                                                                                                          if   net4RegKey    regKey OpenSubKey  quot  dotNet4Registry quot                                                  if -not   net4Release    net4RegKey GetValue  Release                                                            net4Release   30319                                                                            write-host  quot adding new dotnet quot                            dotNetter    New-Object -TypeName PSObject -Property                                     ComputerName     computerName                                  OS     os                                  Build     net4Release                                  Version     dotNet4Builds  quot  net4Release quot   Version                                  Comment     dotNet4Builds  quot  net4Release quot   Comment                                                                     if   netRegKey    regKey OpenSubKey  quot  dotNetRoot quot                             write-host  quot Checking for hacked keys quot                           foreach   versionKeyName in  netRegKey GetSubKeyNames                                                          if   versionKeyName -match   v 1234                                       versionKey    netRegKey OpenSubKey  versionKeyName                                  write-host  quot versionKeyName is quot     versionKeyName                                  write-host  ASPNetEnforceViewStateMac        versionKey GetValue  ASPNetEnforceViewStateMac                                         compromisedCheck    New-Object -TypeName PSObject -Property                                         ComputerName     computerName                                      version     versionKeyName                                      compromisedCheck      ASPNetEnforceViewStateMac        versionKey GetValue  ASPNetEnforceViewStateMac                                                                                                                                                                          else              write-host  quot could not connect to machine quot                dotNetter    New-Object -TypeName PSObject -Property                         ComputerName     computerName                      OS     os                      Build     quot Could not connect quot                       Version     quot Could not connect quot                       Comment     quot Could not connect quot                                     dotNetter   export-CSV c  temp DotNetVersions csv      compromisedCheck   export-CSV C  temp CompromisedCheck csv   get-dotnetframeworkversion  computerList

User · Answer

Nice solution  Try using the downloadable DotNetVersionLister module  based on registry infos and some version-to-marketing-version lookup table    Which would be used like this   PS gt  Get-DotNetVersion -LocalHost -nosummary   ComputerName   localhost  gt  4 x          4 5 2 v4 Client      Installed v4 Full        Installed v3 5           Installed v3 0           Installed v2 0 50727     Installed v1 1 4322      Not installed  no key  Ping           True Error            Or like this if you just want to test it for some  NET framework    4     PS gt   Get-DotNetVersion -LocalHost -nosummary    gt  4 x  4 5 2   But it will not work  install import  e g  with PS v2 0  Win 7  Win Server 2010 standard  due to incompatibility     Motivation for  legacy  functions below   You could skip reading this and use code below   We had to work with PS 2 0 on some machines and could not install import the above DotNetVersionLister  On other machines we wanted to update  from PS 2 0  to PS 5 1  which in turn needs  NET Framework    4 5  with the help of two company-custom Install-DotnetLatestCompany and Install-PSLatestCompany  To guide admins nicely through the install update process we would have to determine the  NET version in these functions on all machines and PS versions existing  Thus we used also the below functions to determine them more safely in all environments     Functions for legacy PS environments  e g  PS v2 0   So the following code and below  extracted  usage examples are useful here  based on other answers here    function Get-DotNetVersionByFs      lt        SYNOPSIS       NOT RECOMMENDED - try using instead          Get-DotNetVersion            from DotNetVersionLister module  https   github com EliteLoser DotNetVersionLister              but it is not usable importable in PowerShell 2 0          Get-DotNetVersionByReg           reg istry  based   available herin as well  but it may return some wrong version or may not work reliably for versions  gt  4 5             works in PSv2 0        Get-DotNetVersionByFs  this             f ile  s ystem  based  determines the latest installed  NET version based on  Env windir Microsoft NET Framework content         this is unreliable  e g  if 4 0  is already installed some 4 5 update will overwrite content there without         renaming the folder          works in PSv2 0       EXAMPLE       PS gt  Get-DotnetVersionByFs       4 0 30319      EXAMPLE       PS gt  Get-DotnetVersionByFs -All       1 0 3705       1 1 4322       2 0 50727       3 0       3 5       4 0 30319      NOTES       from https   stackoverflow com a 52078523 1915920     gt       cmdletbinding      param       Switch  All     do not return only latest  but all installed        list   ls  Env windir Microsoft NET Framework             PSIsContainer -and    Name -match   v d   d                    Name TrimStart  v       if   All     list   else    list   select -last 1       function Get-DotNetVersionByReg      lt        SYNOPSIS       NOT RECOMMENDED - try using instead          Get-DotNetVersion           From DotNetVersionLister module  https   github com EliteLoser DotNetVersionLister              but it is not usable importable in PowerShell 2 0             Determines the latest installed  NET version based on registry infos under  HKLM  SOFTWARE Microsoft NET Framework Setup NDP       EXAMPLE         PS gt  Get-DotnetVersionByReg         4 5 51209      EXAMPLE         PS gt  Get-DotnetVersionByReg -AllDetailed         PSChildName                                          Version                                             Release         -----------                                          -------                                             -------         v2 0 50727                                           2 0 50727 5420         v3 0                                                 3 0 30729 5420         Windows Communication Foundation                     3 0 4506 5420         Windows Presentation Foundation                      3 0 6920 5011         v3 5                                                 3 5 30729 5420         Client                                               4 0 0 0         Client                                               4 5 51209                                           379893         Full                                                 4 5 51209                                           379893      NOTES       from https   stackoverflow com a 52078523 1915920     gt       cmdletbinding        param           Switch  AllDetailed     do not return only latest  but all installed with more details            Lookup              378389    version  4 5          378675    version  4 5 1          378758    version  4 5 1          379893    version  4 5 2          393295    version  4 6          393297    version  4 6          394254    version  4 6 1          394271    version  4 6 1          394802    version  4 6 2          394806    version  4 6 2          460798    version  4 7          460805    version  4 7          461308    version  4 7 1          461310    version  4 7 1          461808    version  4 7 2          461814    version  4 7 2             list   Get-ChildItem  HKLM  SOFTWARE Microsoft NET Framework Setup NDP  -Recurse           Get-ItemProperty -name Version  Release -EA 0             For One True framework  latest  NET 4x   change match to PSChildName -eq  Full           Where-Object      PSChildName -match      S  p L              Select-Object                                name     NET Framework                    expression       PSChildName                    name    Product                    expression     Lookup    Release                 Version  Release     if   AllDetailed     list   sort version   else    list   sort version   select -last 1         version         Example usage   PS gt  Get-DotNetVersionByFs 4 0 30319  PS gt  Get-DotNetVersionByFs -All 1 0 3705 1 1 4322 2 0 50727 3 0 3 5 4 0 30319  PS gt  Get-DotNetVersionByReg 4 5 51209  PS gt  Get-DotNetVersionByReg -AllDetailed   NET Framework                   Product Version        Release --------------                   ------- -------        ------- v2 0 50727                               2 0 50727 5420 v3 0                                     3 0 30729 5420 Windows Communication Foundation         3 0 4506 5420 Windows Presentation Foundation          3 0 6920 5011 v3 5                                     3 5 30729 5420 Client                                   4 0 0 0 Client                           4 5 2   4 5 51209      379893 Full                             4 5 2   4 5 51209      379893

User · Answer

Not pretty  Definitely not pretty   ls  Env windir Microsoft NET Framework          PSIsContainer     select -exp Name -l 1   This may or may not work  But as far as the latest version is concerned this should be pretty reliable  as there are essentially empty folders for old versions  1 0  1 1  but not newer ones     those only appear once the appropriate framework is installed   Still  I suspect there must be a better way

User · Answer

Correct syntax    System Runtime InteropServices RuntimeEnvironment   GetSystemVersion    or  PSVersionTable CLRVersion   The GetSystemVersion function returns a string like this   v2 0 50727         PowerShell v2 0 in Win 7 SP1   or like this  v4 0 30319         PowerShell v3 0  Windows Management Framework 3 0  in Win 7 SP1    PSVersionTable is a read-only object  The CLRVersion property is a structured version number like this   Major  Minor  Build  Revision -----  -----  -----  -------- 4      0      30319  18444

User · Answer

environment   Version   Gives you an instance of Version for the CLR the current copy of PSH is using  as documented here

[.net] PowerShell script to return versions of .NET Framework on a machine?

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