– EA Sports (the developer of FIFA 14) does not distribute individual DLL files like core activation.dll separately. If the file is missing or corrupted, the solution is to repair or reinstall the game through an official platform (Origin, Steam, or EA App).
Use the "Repair" function within the EA App . This scans for missing or corrupted files, including activation.dll , and replaces them with official versions. download core activation.dll file for fifa 14
Right-click FIFA14.exe → Properties → Compatibility → Check “Run this program as administrator” → Apply. – EA Sports (the developer of FIFA 14)