Tip: How to disable the UAC in Windows Server 2012?

Windows Server 2012: Deactivating UAC

PS C:\> $RegKey = "HKLM:SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system"
PS C:\> Set-ItemProperty -path $RegKey -name EnableLUA -value 0

You will get a notification that a reboot is required.

Shortly:

Set-ItemProperty -path "HKLM:SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system" -name EnableLUA -value 0