The first method to disable the Automatic Update in Windows 10, is to remove the default permissions on the following files: wuaueng.dll & wuauclt.exe.
Disable all Windows Update Services & Tasks. Change Permissions to Windows Update files. To permanently prevent Windows 10 to install updates, use one of the following methods. How to Permanently Disable Updates in Windows 10 (All Versions). How to Temporarily Pause Updates in Windows 10 Pro, Enterprise or Education version(s). How to Stop Updates using Group Policy Editor in Windows 10 Pro, Enterprise, Education version(s). How to Disable Updates in Windows 10 (All Versions). How to STOP Windows 10 Automatic Updates.
To avoid security risks and Windows problems it is not recommended to disable the Windows 10 update, but in some cases there is the need to do that, especially if you have problems during installing an update to your system or if you face stability issues or other problems after installing an update. As you may already know, in Windows 10 you cannot prevent the Updates download and installation, by disabling the Windows Update service, because Windows 10 overrides this setting and forces the service to start and install the updates.
This tutorial contains detailed instructions to turn off Windows 10 updates permanently.
