Easyest way to disable Windows 10 updates is:-
Press the Windows key and R at the same time; This will bring up the run dialog box.

Type in msconfig and click OK
You now get the configuration settings box; click on the Services tab.

Scroll down and you will find the Windows Update entry click in the box to remove the tick.
Click the Apply button and windows update is OFF.
If you want to check for updates in the future just do it all again and put the tick back. When you exit the msconfig box it will suggest a restart but there is no need the windows update service stops or starts straight away,
John