Run the CostGuard Activation Utility on each workstation
Start CostGuard, log in, click Help, Run Activation Utility, then click StandAlone;
Click the Client/Server tab and check the box labeled Activate client/server database.
(if you ever stop using the client/server database, then you Must remember to uncheck this box)
If you CAN NOT open CostGuard
Go to Program Files x86\CostGuard\UnlockCG.exe
If you receive an error when you open the utility, close the error box and click the key icon on your computer’s toolbar at the bottom of the screen. That will open the activation utility. Then follow the instructions above for checking the client/server box.