1. Press Windows + R to open the Run window.
2. Type in services.msc then click OK.
3. Scroll down and find Windows Update in the Services list.
4. Double-click on it to open its properties.
5. In the Startup type dropdown menu, select Disabled.
6. Click Apply and then OK to save the changes.
7. Close the Services window.
8. Open the Control Panel.
9. Go to System and Security > Windows Update.
10. On the left-hand side of the window, click Change settings.
11. Under Important Updates, select Never check for updates (not recommended).
12. Click Apply and then OK to save the changes.