Sometimes the error is caused by an outdated version of the Uplay/Ubisoft Connect client itself.
A: This means you haven't added the game folder to your antivirus's exclusion list . You must create an exclusion for the entire game directory to tell your security software to leave it alone permanently. Just restoring the file isn't enough. Sometimes the error is caused by an outdated
If that doesn’t work, antivirus is almost certainly the cause. The issue is not a broken PC – it’s an overzealous security program or a partial update. Sometimes the error is caused by an outdated
Open your (Windows Defender, Avast, Bitdefender, etc.). Look for Quarantine or Protection History . Sometimes the error is caused by an outdated
: If you are using a repack, check the game's installation directory for a folder named (often inside a subfolder). Copy the uplay_r1_loader64.dll