Shariq Sheikh | Port 389

Its pretty simple to turn the automatic updates in Server Core by using scregedit to modify the registry, simply type in this command :

cscript c:\Windows\system32\scregedit.wsf /au 4

After that, you do have to stop and start the Windows Update service

net stop wuauserv
net start wuauserv

The swtich /au 4 sets the time for checking the updates at 3am. It also sets the server to reboot if the updates require it to. You can disable automatic updates by using /au 1 switch or /v to view the current settings. To force an immediate check for updates, run the following command:

wuauclt /detectnow