Registry key location for software deployed via Group Policy?

Solution 1:

Look in:

HKLM\Software\Microsoft\Windows\Current Version\Group Policy\AppMgmt. Find the key that corresponds to the software you're looking for, and delete it. Then run gpupdate /force and restart.

Solution 2:

I believe:

GPO applied to the local computer:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Group Policy\History

GPO applied to the currently logged on user:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion
  \Group Policy\History

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Solution 3:

Instead of deleting the key, you can also set the AppState value to 0. The original value should 9 or 17 (with removal option).

Get-ItemProperty `
-Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\AppMgmt\*" `
| ForEach-Object {
  if ($_. "Deployment Name" -match '^<the deployment name>$') {
    $_

    $answer = Read-Host "Set value?"

    if ( $answer -match "(?i)Y") {
      New-ItemProperty $_.PSPath -Name AppState -Value 0 -Force
    }
  }
}

PS: I wanted to add a comment to the accepted answer but I do not have 50 reputations as of now, so I am adding an answer here.