Prevent windows server from restarting automatically, windows update

[Elefanten]

Hello All,

I have a windows server 2016 with an old software that needs maintenance and no restart during 1 month that i want to block from restarting automatically.

In registry the following settings are applied :

AlwaysAutoRebootAtScheduledTime : 1

AlwaysAutoRebootAtSCheduledTimeMInutes : 1

NoAutoRebootWithLoggedOnUsers : 1

NoAutoUpdate : 0

ScheduledInstallDay : 4

ScheduledInstallEveryWeek : 1
ScheduledINstallTime : 16

If i set AlwaysAutoRebootAtScheduledTime to 0 that should do the trick on automatic rebooting ?
Will registry changed on Windows update apply instantly or do i need to reboot the server ?

Regards

Elefanten

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