Open your and right-click on the problematic Ubisoft game. Select Properties and navigate to the Installed Files tab.

Navigate to C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher and delete the folder entirely.

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The most likely root cause in 2025 remains or achievement manifest versioning due to a game update. The solutions in Section 3 (especially clearing %LOCALAPPDATA%\Ubisoft Game Launcher\cache ) have resolved this for over 90% of affected users based on community polling.

Navigate to the Ubisoft Connect installation directory and delete the folder. Restart the application and log in again.

If the launcher is fine, the specific "hook" inside the game folder might be the problem. Most platforms allow you to repair these files without a full redownload.

The game is too old for the new Ubisoft Connect version.

If verification fails, you may need to manually replace the specific files mentioned in the error. Locate your game's installation folder (e.g.,

: Click the three dots next to the game title -> Manage -> Verify . 3. Update or Clean Install Ubisoft Connect