getting Windows version with PowerShell [duplicate]

Question

I am running windows PRO

when I run the following command :

(Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name ProductName).ProductName

using a regular user in PowerShell the result is Windows 10 PRO though I am running Windows 11

when I run the same command using Admin mode I get :

Windows 10 Enterprise

Which is pretty amazing given the fact that it comes from the same registry key.

I was wondering if it is a bug and if someone have a better way getting the product name (like pro enterprise etc.)

running the same command in powershell (not through a .ps1 file) gives the same results.

You can also decide what windows version is actually installed by looking at HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion item CurrentBuildNumber. Windows 10 have numbers there starting at 10000; Windows 11 starts with 20000 — Theo
– Theo, Commented Nov 24, 2022 at 12:47
((Get-CimInstance Win32_OperatingSystem | select name).name).split('|')[0] - The name property would tell you the actual. Please run it and check. — Ranadip Dutta
– Ranadip Dutta, Commented Nov 24, 2022 at 21:22
thx Mathias that seems to be working great though I am still not sure why getting it from the registry in 2 different user modes ends with different result... — Avner Hilu
– Avner Hilu, Commented Nov 26, 2022 at 9:59
Does this answer your question? How to find the Windows version from the PowerShell command line — Dennis
– Dennis, Commented Nov 29, 2022 at 19:13

js2010 · Accepted Answer · 2024-01-22 16:42:11Z

I have this bit of code. Releaseid seems deprecated. Ubr changes with each monthly update.

# patchcheck.ps1

$reg = Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion'
$releaseid = $reg.releaseid
$ubr = $reg.ubr
$displayversion = $reg.displayversion

[pscustomobject]@{result = 
  switch ($releaseid) {
    '1607' { $ubr -ge '4651' } # kb5005573
    '1709' { $false } 
    '1809' { $false }
    '1903' { $false } 
    '1909' { $ubr -ge '1801' } # KB5005566
    '2004' { $ubr -ge '1288' } # kb5006670
    '2009' { $ubr -ge '1288' } # kb5006670
    default { $false }
  }
  releaseid = $releaseid
  displayversion = $displayversion
  ubr = $ubr
}

icm comp001 patchcheck.ps1 | ft

result releaseid displayversion  ubr PSComputerName RunspaceId
------ --------- --------------  --- -------------- ----------
  True 2009      21H2           2251 comp001        214ba11a-7f1b-453a-a52c-6ea59928780e

Getting whether Enterprise or Pro, in case windows 10 or 11 Enterprise reverts back by to Pro itself, which seems to be a thing:

Get-CimInstance Win32_OperatingSystem | select caption

caption
-------
Microsoft Windows 10 Enterprise
Microsoft Windows 10 Pro

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