Taking these proactive steps can help you avoid these errors in the future.

Type %localappdata% and press Enter. Delete the folder if it remains. Restart your computer.

Manually uninstall "Ubisoft Connect" or "Uplay" via the Windows menu.

Once the verification is complete, launch the game and see if the issue is fixed.

Over time, the Ubisoft Connect client accumulates cache data. If this data becomes corrupted, specific functions—like achievement unlocking—may fail to execute, causing the error.

Follow these troubleshooting steps in order. Move to the next solution only if the previous one does not resolve the issue. 1. Run Both Programs as Administrator

The error is a "Procedure Entry Point Not Found" error. It indicates that an executable file is trying to call a specific function ( UPLAY_ACH_EarnAchievement ) from a Dynamic Link Library (DLL) file, but the function is missing, corrupted, or the DLL itself is the wrong version. Core Causes

If they are broken, download a fresh copy of the client installer on a separate drive, or repair the existing files using your launcher's built-in file verification tool. 4. Verify Integrity of Game Files

Users have reported this error across multiple ecosystems:

To get back to gaming, you generally need to bridge the gap between the game and the launcher: Verify Game Files:

If the above steps fail, you can sometimes fix the issue by manually replacing the problematic loader file.

When the launcher updated, several core file paths and system communication rules changed, leaving older games looking for a specific achievement tracking system function that no longer exists in the current software code. Fortunately, you can fix this issue yourself using a few simple troubleshooting methods. Understanding the Root Cause