Microsoft Support - Disabling User Account Control (UAC) on Windows Server (KB2526083)

Import:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]
"EnableLUA"=dword:00000000

Or execute:

"%SYSTEMROOT%\system32\reg.exe" ADD "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v EnableLUA /t REG_DWORD /d 0 /f

Computer Configuration\Policies\Windows Settings\Security Settings\ Local Policies\Security Options:

• User Account Control: Behavior of the elevation prompt for administrators in Admin Approval Mode: Elevate without prompting.
• User Account Control: Detect application installations and prompt for elevation: Disabled
• User Account Control: Run all administrators in Admin Approval Mode: Disabled
• User Account Control: Only elevate UIAccess applications that are installed in secure locations: Disabled

Source: Subclassed - Fully disable User Access Control (UAC) via Group Policy (GPO)

Import:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]
"EnableLUA"=dword:00000001

Or execute:

"%SYSTEMROOT%\system32\reg.exe" ADD "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v EnableLUA /t REG_DWORD /d 1 /f