Call Of Duty Ghosts Filesyscheck.cfg Error May 2026

You won’t always see the filename in a pop-up window. Use these diagnostic steps to confirm the culprit.

Modern antivirus software (including Windows Defender) aggressively scans .cfg files because they can be used to load DLLs. Call of Duty: Ghosts (released 2013) uses older code patterns that trigger false positives. call of duty ghosts filesyscheck.cfg error

For Windows Defender:

For Third-Party AV (Norton, McAfee, AVG): Disable real-time protection temporarily. If the game launches, add the entire COD Ghosts folder to the AV's whitelist. You won’t always see the filename in a pop-up window

If you have tried everything above and the error persists, there is one last trick. You can bypass the file check entirely. For Third-Party AV (Norton, McAfee, AVG): Disable real-time

This tricks the game into thinking the file check passed. It is a band-aid, not a cure, but it will get you into the game.

The filesyscheck.cfg error often arises during the game's startup or when it tries to validate its files. This configuration file is crucial for the game to perform a file system check, ensuring that all game files are present and intact.