Open the Windows and click Uninstall a Program .
Simply updating the app through its built-in utility often leaves behind legacy file fragments that preserve the entry point mismatch. A complete purge and clean reinstall forces the system to map the dynamic link library correctly.
The error centers around the communication between your game file and your Ubisoft launcher software.
Go to your Ubisoft Connect installation folder (usually C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher ). Find Uplay.dll or uplay_r1_loader.dll . uplay-ach-earnachievement could not be located
As of 2026, with the ongoing evolution of Ubisoft Connect PC , this error often stems from cache corruption, network synchronization issues, or outdated software.
Proven Fixes for the "uplay-ach-earnachievement could not be located" Error Follow these steps in order to resolve the issue. 1. Clear the Ubisoft Connect Cache
Download the latest version from the official Ubisoft Connect website . Open the Windows and click Uninstall a Program
The error "the procedure entry point could not be located" can be caused by several factors.
Paste the files ( Ctrl + V ), choosing to if prompted. 5. Disable In-Game Overlays
Which did you buy or download the game from (Steam, Epic Games Store, or Ubisoft Connect)? The error centers around the communication between your
If the error persists, you may need to manually replace the problematic loader file. Find your game's installation folder (e.g., SteamLibrary\steamapps\common\Assassins Creed IV Black Flag uplay_r1_loader.dll uplay_r1.dll
If you see uplay_r1_loader.dll or similar files listed, restore them and add the game folder to your list.