PC Gaming troubleshooting / Call of Duty: Black Ops II end users Last verified: Compatible with Steam & Plutonium builds as of 2026
If the file was deleted before you set up the exclusion, you need to replace it. The easiest way to do this is via Steam’s built-in verification tool. This forces Steam to check your local files against the master server and redownload any missing or corrupted files—including default.cfg . call of duty black ops 2 missing config file default.cfg
In 99% of cases, the error is fixed by and running the executable as an administrator . If you have followed all six solutions in this guide and the error persists, the final, nuclear option is a complete uninstall of both Steam and the game, manually deleting the Activision folders from Documents and ProgramData , and reinstalling on a different drive. PC Gaming troubleshooting / Call of Duty: Black
Black Ops 2 often fails to read files if the installation path contains special symbols (like ! , @ , or # ). In 99% of cases, the error is fixed
System restrictions can prevent the game from generating the default.cfg file on its first run.
| Cause | Description | |-------|-------------| | | Real-time protection (especially Bitdefender, McAfee, Windows Defender) flags default.cfg as a false positive and removes it. | | Corrupted installation | Steam file validation missed the file due to folder permission issues or partial download. | | Plutonium/T7X mod interference | Third-party clients sometimes redirect the config path or overwrite the file incorrectly. | | Write-protected players folder | If players is read-only, the game cannot generate missing configs. | | Missing players directory entirely | Some editions fail to create the folder on first launch. |
If a game is buried too deep in a series of subfolders, the path may become too long for the game to process. Drive Issues: