Many OEM systems come with Windows 11 out of the box :(…
Systems with CPU above 7th generation and memory capacity will be scanned and allowed to auto-upgrade from Windows 10. This has caught a lot of my clients off-guard..
I found a way to prevent Windows 11 from automatically upgrading from Windows 10. Its 3 registry keys I set via my RMM agent install process.
reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate /f /v TargetReleaseVersion /t REG_DWORD /d 1
reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate /f /v TargetReleaseVersionInfo /t REG_SZ /d 22H2
reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate /f /v ProductVersion /t REG_SZ /d “Windows 10”
Later, to allow Windows 11 upgrade, just change the last key to Windows 11.
Good luck!