User Access Control must be disabled for Device Control 8.2.x to function properly.
If the Device Control Management Server is installed with Windows Server 2008, complete the following steps to ensure that UAC is not enabled.
To disable UAC
1) In Control Panel, double-click User Accounts, then click Turn User Account Control on or off.
2) Deselect Use User Account Control (UAC) to help protect your computer, then click OK.
3) You must restart the computer to apply the change.