4. Check if there is a folder named Xpack1 under Battlefield 4
If YES -> Click on Xpack1, on the right pane check if there is a string named Installed, the Value data should be True
If NO - right-click on Battlefield 4 > New > Key
- a new folder will be created, name it Xpack1
- right-click on Xpack1 > New > String Value > name it Installed
- on the right-pane, double-click on Installed, set Value Data to True
5. Exit Registry Editor