Be Located |work|: Uplay-ach-earnachievement Could Not
After disabling these, restart your game and try triggering an achievement again.
If the issue persists, try unlinking and then relinking your game to Ubisoft Connect.
At its core, this is an error. It occurs when a game executable ( .exe ) attempts to call a specific function—in this case, the routine responsible for triggering an in-game achievement ( UPLAY_ACH_EarnAchievement )—but fails to find that command inside the designated Dynamic Link Library ( uplay_r1_loader.dll ). The most common reasons for this disconnect include:
Repeat these exact steps for the main .exe file of the game you are trying to play. Method 2: Verify the Integrity of Game Files uplay-ach-earnachievement could not be located
Click the in the top-left corner and go to Settings .
Your antivirus may have blocked the uplay_r1_loader.dll or uplay_r1_loader64.dll file. Open your antivirus (e.g., ). Go to Protection history . If you see a blocked Ubisoft file, select Actions > Allow .
Download the absolute newest client directly from the Official Ubisoft Connect Website. After disabling these, restart your game and try
Quick fixes (try in order)
Antivirus software can sometimes interfere with the Uplay client. Temporarily disable your antivirus software and try launching the Uplay client again.
The specific DLL file inside your game directory has become corrupted or was improperly modified during a patch. It occurs when a game executable (
Identifying the root cause is the first step. For this specific "uplay-ach-earnachievement" error, the most common culprits are:
Missing dependencies inside Steam or the Epic Games Store can trigger entry point errors. : Right-click the game →right arrow Select Properties →right arrow Navigate to Installed Files →right arrow Click Verify integrity of game files . On Ubisoft Connect : Select the game →right arrow Go to Properties →right arrow Click Verify Files under Local Files. Comparison: Troubleshooting Options Resolution Method Technical Difficulty Risk Level Primary Target Cause Clean Connect Reinstallation Outdated or mismatched core Uplay software Antivirus Quarantine Restore Safe (Verify Source) False positive blocks on the uplay_r164.dll file Manual DLL Replacement Moderate (Avoid Unknown Sites) Missing entry functions in older game versions Game File Verification Corrupted game installation data
The best approach is to start with the simplest fixes and work your way up to the more advanced ones. This will save you time and prevent unnecessary steps.
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