Type %localappdata% and press Enter. Delete the folder if it remains. Restart your computer.
When you launch an older Ubisoft title through Steam or the Epic Games Store, the game looks for specific Dynamic Link Library ( .dll ) files to communicate with the client launcher. The prefix UPLAY_ACH specifically refers to the legacy . The application fails to start due to three primary causes:
If reinstalling the launcher doesn't solve the problem, the issue may be isolated to one or two DLL files within the game's own folder.
This is the number one cause reported across forums. Modern antivirus software, including the built-in Windows Defender, aggressively quarantines or deletes files it suspects might be harmful. Sometimes, it mistakenly flags a part of the game's DRM or a DLL file as a false positive. During installation or an update, your antivirus may have silently removed the uplay_r1_loader.dll file or prevented it from being properly created.
If a simple update doesn't work, a clean install of the launcher often does. Uninstall Ubisoft Connect/Uplay via the Control Panel. uplay-ach-earnachievement could not be located
: Right-click the game’s .exe file in its installation folder and select Run as administrator to bypass permission errors that might be preventing the system from "locating" the achievement module.
Since the error is related to online achievements, a poor connection or a firewall can sometimes trigger it as a secondary issue.
If verifying game files doesn't resolve the issue, try repairing the Uplay installation:
Locate or Uplay , right-click it, and select Uninstall . Type %localappdata% and press Enter
Antivirus software "quarantining" or replacing the DLL with a generic/incorrect version.
Download the latest version from the official Ubisoft Connect website .
If these steps do not resolve the "uplay-ach-earnachievement could not be located" issue, you may need to contact Ubisoft Support for a manual synchronization of your account data. If the error persists,
This error typically does not mean you have lost your achievements permanently. Instead, it means the launcher cannot process the unlock at that exact moment. When you launch an older Ubisoft title through
Corrupted installations or outdated DLL files inside your game directory can trigger the entry point error. Verifying the files forces the launcher to replace missing or damaged data. For Ubisoft Connect: Open and go to your Library . Click on the game causing the issue. Select Properties from the left-hand menu. Under Local files , click Verify files . For Steam: Open Steam and navigate to your Library .
Система не обнаружила uplay_r164.dll — решение
This is the most effective fix, as it replaces all corrupted or missing DLL files with the latest versions. Go to . Select Ubisoft Connect and uninstall it.