(160) Microsoft Intune - Windows Update Restart Notification

Mr B SOE way
Mar 28, 2025
2 min read

Since Windows 11 22H2, 23H2 and 24H2, I have noticed this setting has dropped the ball.

After further investigation, I noticed that missing HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsUpdate\UX\Settings the RestartNotificationsAllowed2 key where value should be 1.

After further digging and testing, I managed to get it worked, creating a Win32 app did not the job, but using a Remendation (Detect and Remediate) worked.

Detect.ps1

# Stop any previous logging
try { Stop-Transcript } catch {}

# Log
$logFile = Join-Path $env:ProgramData "Microsoft\IntuneManagementExtension\Logs\Detect-RebootNotification.log"
Start-Transcript -Append -Path $logFile

# Default Exit Code (1 = fail)
$exitCode = 1

try {
    # Reg Key Used
    $registryPath = "HKLM:\Software\Microsoft\WindowsUpdate\UX\Settings"
    $registryKey  = "RestartNotificationsAllowed2"
    
    # Get key
    $regProps = Get-ItemProperty -Path $registryPath -ErrorAction SilentlyContinue
    
    if (-not $regProps) {
        Write-Output "Key doesn't exist"
    }
    elseif (-not ($regProps.PSObject.Properties.Name -contains $registryKey)) {
        Write-Output "Property doesn't exist"
    }
    else {
        $value = $regProps.$registryKey
        
        if ($value -eq 1) {
            Write-Output "Key '$registryPath\$registryKey' equals 1."
            $exitCode = 0
        }
        else {
            Write-Output "Key '$registryPath\$registryKey' Does not equals 1. Value is $value."
        }
    }
}
catch {
    Write-Error "Error : $_"
}
finally {
    Stop-Transcript
    exit $exitCode
}

Remediate.ps1

try { Stop-Transcript } catch {}

# Log files
$logFile = "$($env:ProgramData)\Microsoft\IntuneManagementExtension\Logs\Remediate-RebootNotification.log"
Start-Transcript -Append -Path $LogFile

try {
    # Reg keys
    $RegistryPath = "HKLM:\SOFTWARE\Microsoft\WindowsUpdate\UX\Settings"
    $RegistryKey = "RestartNotificationsAllowed2"

    # Is it already remediated

    $Value = Get-ItemProperty -Path $RegistryPath -Name $RegistryKey | Select-Object -ExpandProperty $RegistryKey
    if ($Value -ne 1) {
        Write-Output "Key $RegistryPath\$RegistryKey is not equals to 1. Remediating..."
        Set-ItemProperty -Path $RegistryPath -Name $RegistryKey -Value 1 | Out-Null
        Write-Output "Key $RegistryPath\$RegistryKey has been updated to 1."
    } else {
        Write-Output "Key $RegistryPath\$RegistryKey is already equals to 1. No action needed."
    }
    Stop-Transcript
    exit 0
} catch {
    Write-Error "Error : $_"
    Stop-Transcript
    exit 1
}

It should look this one setup:

Along with having the following Settings Catalog profile in place:

Active Hours End = 16
Active Hours Start = 7
Auto Restart Notification Schedule = 240 minutes
Auto Restart Required Notification Dismissal = User Dismissal
Engaged Restart Snooze Schedule = 2
Schedule Imminent Restart Warning = 60 Minutes
Schedule Restart Warning = 24 hours
Scheduled Install Day = Tuesday
Scheduled Install Third Week = update is scheduled every third week of the month
Scheduled Install Time = 1
Update Notification Level = Use the default Windows Update notifications