Disable UAC - UAC or Registry

By GPO

In the Group Policy Editor window, browse to Computer Configuration > Policies > Windows Settings > Security Settings > Local Policies > Security Options.

By Registry

Click Start, click Run, type regedit, and then click Enter.

If prompted to enter your credentials by UAC, do so and/or press Yes to continue.

Navigate to the following registry subkey:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

In the details pane, locate the EnableLUA key (REG_DWORD type).

On the Edit menu, click Modify. In the Value data box, type 0 (zero), and then click OK.

Exit Registry Editor, and then reboot the computer.