Update

setupOffice.ps1

@@ -20,10 +20,28 @@ function CheckOfficeInstall {
         InstallOffice
     }
     Write-Host "Activating Windows and Office..."
+    $status = CheckActivation
+    
     ActivateWindowsOffice
     Write-Host "Windows and Office activation complete!"
 }
 
+function CheckActivation {
+    $osLicense = Get-CimInstance -ClassName SoftwareLicensingProduct | Where-Object { $_.Description -match "Windows" }
+    $officeLicense = Get-CimInstance -ClassName SoftwareLicensingProduct | Where-Object { $_.Description -match "Office" }
+    $windows = $osLicense.Description
+    $office = $officeLicense.Description
+
+    # if both activated return true
+    if ($osLicense.LicenseStatus -eq 1 -and $officeLicense.LicenseStatus -eq 1) {
+        Write-Host "Windows and Office are activated."
+        return $true
+    } else {
+        Write-Host "Windows and Office are not activated."
+        return $false
+    }
+}
+
 function InstallOffice {
     DownloadFiles -Type "Office"
     $imagePath = Join-Path $tmpPath "O365ProPlusRetail.img"

setupReg.ps1

@@ -87,14 +87,26 @@ function SetupEleveReg {
         }
         Write-Host "Added registry entries"
         Write-Host "Unloading registry HIVE"
-        Start-Sleep -s 5
-        Write-Host "REG UNLOAD HKEY_USERS\$UserSID"
-        $res = REG UNLOAD HKEY_USERS\$UserSID
-        if ($res -ne 0) {
-            Write-Host "Failed to unload $username's HKU registry hive."
+        $retryCount = 0
+        $retryLimit = 5
+        $success = $false
+
+        while (-not $success -and $retryCount -lt $retryLimit) {
+            Start-Sleep -s 5
+            Write-Host "REG UNLOAD HKEY_USERS\$UserSID (attempt $($retryCount + 1))"
+            $res = REG UNLOAD HKEY_USERS\$UserSID
+            if ($res -ne 0) {
+                Write-Host "Failed to unload $username's HKU registry hive. Retrying in 5 seconds..."
+                $retryCount++
+            }
+            else {
+                Write-Host "Unloaded $username's HKU registry hive."
+                $success = $true
+            }
         }
-        else {
-            Write-Host "Unloaded $username's HKU registry hive."
+
+        if (-not $success) {
+            Write-Host "Failed to unload $username's HKU registry hive after $retryLimit attempts."
         }
     } else {
         Write-Host "Unable to get the user's HKU registry."