diff --git a/scripts/optimize-windows-update.ps1 b/scripts/optimize-windows-update.ps1
index 3835e93..82b2a00 100644
--- a/scripts/optimize-windows-update.ps1
+++ b/scripts/optimize-windows-update.ps1
@@ -18,8 +18,11 @@ sp "HKLM:\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization" "DODownloadM
 #echo "Disabling automatic driver update"
 #sp "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\DriverSearching" "SearchOrderConfig" 0
 
+$objSID = New-Object System.Security.Principal.SecurityIdentifier "S-1-1-0"
+$EveryOne = $objSID.Translate( [System.Security.Principal.NTAccount]).Value
+
 echo "Disable 'Updates are available' message"
 takeown /F "$env:WinDIR\System32\MusNotification.exe"
-icacls "$env:WinDIR\System32\MusNotification.exe" /deny "Everyone:(X)"
+icacls "$env:WinDIR\System32\MusNotification.exe" /deny "$EveryOne:(X)"
 takeown /F "$env:WinDIR\System32\MusNotificationUx.exe"
-icacls "$env:WinDIR\System32\MusNotificationUx.exe" /deny "Everyone:(X)"
+icacls "$env:WinDIR\System32\MusNotificationUx.exe" /deny "$EveryOne:(X)"