Follow these steps if you require to Stop the Windows Update service (Windows 10 only):

1. When you are getting into the portal, the following message will appear. Click on the link in order to see the Retrieve List.
2. Now click on the link Windows Update Services script:
3. Click on the Run button.
4. If the User Account Control (UAC) message appears, click on the Yes button in order to allow it.
5. Wait until this window closes by itself.
6. And click on the OK button. The Windows Update service has been disabled.