fix-gamebar.ps1

# Fix the ms-gamebar / ms-gamingoverlay "you'll need a new app" nag after uninstalling Xbox.
# Usage:  .\fix-gamebar.ps1 apply    (or 'restore', or omit for a Yes/No/Cancel prompt)
param([ValidateSet('apply','restore','cancel')][string]$Action)

$id = 'ms-gamebar-annoyance'

# Current state: is the fix already applied? (checkmark next to the matching choice)
$check = [char]0x2713
if (Get-ItemProperty Registry::HKCR\ms-gamebar NoOpenWith -ErrorAction SilentlyContinue) {
  $applyMark = $check; $restoreMark = ''
} else {
  $applyMark = ''; $restoreMark = $check
}

# Prompt if no action given on the command line
if (-not $Action) {
  $shell = New-Object -ComObject Wscript.Shell
  # 0x1043 = Yes/No/Cancel + question icon + default Cancel; returns 6=Yes 7=No 2=Cancel
  $choice = $shell.Popup("Yes to apply $applyMark  -  No to restore $restoreMark", 0, $id, 0x1043)
  $Action = @{6='apply'; 7='restore'; 2='cancel'}[$choice]
}
if ($null -eq $Action -or $Action -eq 'cancel') { return }

$toggle = if ($Action -eq 'apply') { 0 } else { 1 }   # apply disables GameDVR, restore re-enables it

# Per-user Game DVR settings (current, possibly non-admin, user)
Set-ItemProperty "HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\GameDVR" AppCaptureEnabled $toggle -Type DWord -Force -ErrorAction SilentlyContinue
Set-ItemProperty "HKCU:\System\GameConfigStore" GameDVR_Enabled $toggle -Type DWord -Force -ErrorAction SilentlyContinue

# Admin work: rewrite the ms-gamebar* URL protocol handlers (needs elevation)
$adminWork = {
  $action = $args[0]; $id = $args[1]
  [Console]::Title = "$id $action"
  $toggle = if ($action -eq 'apply') { 0 } else { 1 }

  Set-ItemProperty "HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\GameDVR" AppCaptureEnabled $toggle -Type DWord -Force -ErrorAction SilentlyContinue
  Set-ItemProperty "HKCU:\System\GameConfigStore" GameDVR_Enabled $toggle -Type DWord -Force -ErrorAction SilentlyContinue

  foreach ($proto in 'ms-gamebar','ms-gamebarservices','ms-gamingoverlay') {
    $key = "Registry::HKCR\$proto"
    foreach ($sub in 'shell','shell\open','shell\open\command') {
      if (!(Test-Path "$key\$sub")) { New-Item "$key\$sub" -Force > $null }
    }
    Set-ItemProperty $key '(Default)' "URL:$proto" -Force
    Set-ItemProperty $key 'URL Protocol' '' -Force
    if ($action -eq 'apply') {
      Set-ItemProperty $key NoOpenWith '' -Force
      Set-ItemProperty "$key\shell\open\command" '(Default)' "`"$env:SystemRoot\System32\systray.exe`"" -Force
    } else {
      Remove-ItemProperty $key NoOpenWith -Force -ErrorAction SilentlyContinue
      Remove-Item "$key\shell" -Recurse -Force -ErrorAction SilentlyContinue
    }
  }
  Start-Process ms-gamebar://annoyance   # test link; with the fix applied it silently does nothing
}

# Run $adminWork elevated (or directly if already admin)
$isAdmin = [Security.Principal.WindowsIdentity]::GetCurrent().Groups.Value -contains 'S-1-5-32-544'
if ($isAdmin) {
  . $adminWork $Action $id
} else {
  Write-Host " '$id' $Action : Requesting ADMIN rights.. " -ForegroundColor Black -BackgroundColor Yellow
  # Pass the scriptblock across the UAC boundary via a volatile (reboot-cleared) registry value
  Set-ItemProperty HKCU:\Volatile*\* $id ".{$adminWork} '$Action' '$id'" -Force -ErrorAction SilentlyContinue
  Start-Process powershell -Verb RunAs -ArgumentList "-nop -c iex(gp Registry::HKU\S-1-5-21*\Volatile*\* '$id' -ea 0).'$id'"
}