Are you using the or a third-party version? Which specific game is giving you this error?

: Many antivirus programs, including Windows Defender , frequently flag this file as a "false positive" and move it to quarantine, especially if you are using modified or pirated game files.

If you own the game on Steam, the client can automatically scan for missing files and download clean copies directly from Valve's servers. Launch the desktop client. Navigate to your Library . Right-click the problematic game and select Properties . Go to the Installed Files tab (or Local Files ). Click Verify integrity of game files . 2. Check Antivirus Quarantine