Comment You can Disable Windows 10 OS upgrades (Score 1) 221
You can disable Windows updates now, if you have an older build of Windows 10. Specifically, version 1703 which is build number 15063.1387 for me. With this version u can permanently disabled windows updates within Services. When the c:\Windows10Upgrade\ folder is inevitably created, remove ALL permissions so nothing can add files to it. Install Process Blocker and have it block
C:\Windows10Upgrade\Windows10UpgraderApp.exe
C:\windows\softwaredistribution\Download\randomcharacters\WindowsUpdateBox.exe
C:\Windows\UpdateAssistantV2\Windows10Upgrade.exe
C:\Windows\UpdateAssistant\Windows10Upgrade.exe
There u go. Windows update permanently disabled and won't upgrade itself.
Should work on the latest build of Windows 10 as well to block major upgrades,though patches will still install.