The following method found here => https://www.alphr.com/microsoft/microsoft-windows-10/1003724/how-to-stop-the-windows-10-upgrade-from-downloading/
Also described here => https://www.tomsguide.com/how-to/how-to-turn-off-automatic-updates-in-windows-10
You can disable Windows 10 updates by following these steps:
- Using the Win + R keyboard shortcut, type services.msc to access your PC’s service settings.
- Next, scroll down and double-click on Windows Update to access the General settings.
- Now, select Disabled from the Startup type dropdown menu.
- Once done, click Ok and then restart your PC.
Performing this action will permanently disable Windows automatic updates. If you’d like to enable it again, follow the same steps as above and toggle the option to Automatic.