Right-click the game > Properties > Installed Files > Verify integrity of game files .
Environment:
Don't just update it; uninstall the client entirely from your Control Panel and download the latest version from the official Ubisoft website. This ensures all modern DLLs are correctly registered in your system. Verify Game Files: uplayachearnachievement could not be located
Running a Ubisoft game through Steam with both the Steam Overlay and Ubisoft Connect Overlay enabled can cause resource conflicts, making modules like “achearn” unlocatable. Right-click the game > Properties > Installed Files
"The procedure entry point could not be located..." uplayachearnachievement could not be located
Based on similar Ubisoft Connect issues, here are the most effective fixes:
The error often stems from the launcher itself being unable to communicate with the game. Download the latest version of Ubisoft Connect.
