Stop the system automatically rebooting after Windows Updates

Open your registry and find or create the key below.

Create a new DWORD value, or modify the existing value, called "NoAutoRebootWithLoggedOnUsers" and set it according to the value data below.

Exit your registry; you may need to restart or log out of Windows for the change to take effect.

		(Default)	REG_SZ	(value not set)
		NoAutoRebootWithLoggedOnUsers	REG_DWORD	0x00000001 (1)

	HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Windo...

Registry Settings
System Key: [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU]
Value Name: NoAutoRebootWithLoggedOnUsers
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = no effect, 1 = do not automatically reboot)