The Allow non-administrators to install drivers for these device setup classes machine setting should be configured correctly. Specifies a list of device setup class GUIDs describing device drivers that non-administrator members of the built-in Users group may install on the system. If you enable this setting, members of the Users group may install new drivers for the specified device setup classes. The drivers must be signed according to Windows Driver Signing Policy, or be signed by publishers already in the TrustedPublisher store. If you disable or do not configure this setting, only members of the Administrators group are allowed to install new device drivers on the system. Fix: (1) GPO: Computer Configuration\Administrative Templates\System\Driver Installation\Allow non-administrators to install drivers for these device setup classes (2) KEY: HKLM\Software\Policies\Microsoft\Windows\DriverInstall\Restrictions\AllowUserDeviceClasses