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We can disable automatic restart from registry or group policy

1-Disabling Windows Automatic Updates process by ending all instances of "wuauclt.exe" from Task Manager.

2-Click Start Menu -> Run -> type "regedit"
and navigte to
"HKEY_LOCAL_MACHINE\ Software\ Policies\ Microsoft\ Windows\ WindowsUpdate\AU"

create the DWord "NoAutoRebootWithLoggedOnUsers" and set it to "1" to disable automatic restart.

3-Click Start Menu -> Run -> type "gpedit.msc"
and navigte to
"Computer Configuration/Administrative Templates/ Windows Components/Windows Update "

select "No auto-restart for scheduled Automatic Updates installations" and choose "Enabled".