Here’s a step-by-step guide to fix the “uplay-ach-earnachievement could not be located” error, typically seen when launching a Ubisoft game (e.g., Assassin’s Creed, Rainbow Six Siege, Far Cry).
A corrupted cache is the #1 cause of missing function errors like ach-earnachievement.
Steps:
Windows + R, type %localappdata%, and press Enter.Ubisoft Game Launcher folder.cacheachievements (if present)%programdata%/Ubisoft/Launcher/cache (you may need admin rights).When you restart Ubisoft Connect, it will rebuild these caches, re-downloading achievement data from the cloud.
The uplay-ach-earnachievement could not be located error sounds technical and intimidating, but it is almost always solvable with file verification, cache clearing, or overlay management. Achievements are a core part of the modern gaming experience—they mark your milestones, challenges, and mastery.
Do not let a missing script rob you of that satisfaction. Work through the fixes above, and soon enough, that familiar Ubisoft Connect achievement pop-up will return, accompanied by the satisfying click of a challenge completed.
Have you encountered this error with a specific game? Share your experience in the comments below—your fix might help another player in the same situation.
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The "uplay-ach-earnachievement could not be located" error occurs when older Ubisoft games fail to connect with modern Ubisoft Connect software, often stemming from legacy Uplay files. Resolving this typically requires a clean reinstall of Ubisoft Connect, verifying game files, and checking for antivirus interference. For a full guide on clearing the cache, visit Ubisoft Support Microsoft Learn
If you are trying to launch an older Ubisoft title and are blocked by an error stating that "The procedure entry point uplay-ach-earnachievement could not be located in the dynamic link library," you are likely dealing with a compatibility break between legacy game files and the modern Ubisoft Connect launcher.
This specific error occurs because the game is looking for a function within a DLL file (usually uplay_r1_loader.dll) that has been renamed, removed, or updated in the current version of Ubisoft's software. 🛠️ Quick Fixes for the Uplay Entry Point Error 1. Disable the In-Game Overlay
The most common culprit is the Ubisoft Connect overlay trying to "hook" into an older game engine that no longer supports the specific achievement-tracking command. Open Ubisoft Connect. Click the Menu (three lines) in the top-left corner. Select Settings.
Under the General tab, uncheck "Enable in-game overlay for supported games." Restart your game. 2. Verify Game Files
If a DLL file was corrupted during an update or blocked by antivirus software, verifying the integrity of the files can restore the correct version. Go to your Library in Ubisoft Connect or Steam. Select the problematic game. Go to Properties or Manage. Select Verify files and wait for the process to complete. 3. Run as Administrator
Permissions issues can prevent the game from properly accessing the DLL library, leading to "not located" errors.
Right-click the game’s .exe file in its installation folder. Select Properties > Compatibility. Check "Run this program as an administrator." Hit Apply and launch. 🏗️ Advanced Troubleshooting Reinstall Ubisoft Connect
Sometimes the launcher itself has a "ghost" version of a DLL in its cache. Uninstall Ubisoft Connect from the Control Panel.
Go to C:\Program Files (x86)\Ubisoft\Ubisoft Game Launch and manually delete any leftover files.
Download the latest version from the official Ubisoft website and reinstall. Check for Multiple DLL Versions
Some older games (like Assassin’s Creed IV or Splinter Cell) bundle their own version of uplay_r1_loader.dll in the game folder. If this file is older than the one in your Ubisoft Connect folder, they might conflict. uplay-ach-earnachievement could not be located
Try renaming the uplay_r1_loader.dll inside the game installation folder to uplay_r1_loader.dll.old.
This forces the game to use the global system version provided by the launcher. 🔍 Why is this happening?
This error is a classic "DLL Hell" scenario. When Ubisoft transitioned from the "Uplay" branding to "Ubisoft Connect," they updated their Application Programming Interface (API). Older games calling for uplay-ach-earnachievement are essentially calling a phone number that has been disconnected.
By disabling the overlay or updating the launcher, you bridge the gap between the game’s old code and the new software environment. If you'd like to dive deeper, let me know: Which specific game is giving you this error?
Are you launching via Steam, Epic Games, or Ubisoft Connect?
Have you recently updated your Windows or moved the game to a new drive?
I can provide a more tailored fix once I know the exact title you're trying to play.
Antivirus Interference: Security software may have quarantined or deleted essential files like uplay_r1_loader64.dll, mistaking them for threats.
Outdated Launcher: You may be using an old version of Uplay that doesn't support the achievement function required by the game.
Corrupted DLL Files: The specific Dynamic Link Library (DLL) file responsible for communicating between the game and the launcher is damaged or missing. Step-by-Step Solutions 1. Check Antivirus Quarantine
Your antivirus may have blocked the uplay_r1_loader.dll or uplay_r1_loader64.dll file. Open your antivirus (e.g., Windows Security). Go to Protection history. If you see a blocked Ubisoft file, select Actions > Allow.
Add an exclusion: To prevent this from happening again, add your game installation folder to your antivirus exclusion list. 2. Reinstall Ubisoft Connect (The "Purge" Method)
Simple uninstalls often leave behind old registry keys or files that continue to cause the error. Uninstall Ubisoft Connect via the Control Panel.
Manually delete any remaining folders in C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher.
Download and install the latest version directly from the Ubisoft Connect website. 3. Verify Game Files
If you are running the game through Steam or Epic Games, use their built-in tools to repair missing files.
Steam: Right-click the game > Properties > Installed Files > Verify integrity of game files.
Ubisoft Connect: Select the game > Properties > Verify files. 4. Manual DLL Fix (Advanced)
If the above steps fail, you can sometimes fix the issue by manually replacing the problematic loader file. Fix #3: Clear Ubisoft Connect Cache A corrupted
Locate uplay_r1_loader64.dll in your game's directory (usually in the bin folder).
Some users have success by downloading a fresh copy of the DLL from reputable sources like DLL-files.com and pasting it into the game's executable folder.
Warning: Always scan downloaded DLLs for viruses before use. 5. Clear Launcher Cache
Corruption in the launcher's temporary data can also trigger "entry point" errors. Close Ubisoft Connect completely via Task Manager.
Navigate to the Ubisoft installation folder and delete the cache folder. Restart the launcher and log back in.
Are you seeing this error on a specific Ubisoft game, or does it happen across your entire library?
"The procedure entry point uplay-ach-earnachievement could not be located in the dynamic link library"
typically occurs when there is a version mismatch or corruption in the Ubisoft Connect (formerly Uplay) files required by a specific game Error Overview Error Type: Dynamic Link Library (DLL) Entry Point Not Found. Primary Cause: The game executable is looking for a specific function ( uplay-ach-earnachievement ) within a DLL file (usually uplay_r1_loader.dll uplay_r1.dll
), but the version of the file present on the system does not contain that function. Common Scenarios: Outdated Ubisoft Connect client.
Antivirus software "quarantining" or replacing the DLL with a generic/incorrect version.
Using an older version of a game with a newer version of the Ubisoft client (or vice versa). Troubleshooting & Resolution Steps Update Ubisoft Connect
The most frequent fix is ensuring the client itself is up to date. Download the latest version directly from the official Ubisoft Connect website
and install it over your current version. This refreshes the core DLL files in the system path. Verify Game Files
If the error is specific to one game, the local DLL in the game's folder might be corrupt. Ubisoft Connect:
Go to "Games" > Select the game > "Properties" > "Verify files."
Right-click the game > "Properties" > "Local Files" > "Verify integrity of game files." Check Antivirus Quarantines Security software sometimes flags uplay_r1_loader.dll as a false positive.
Open your antivirus history/quarantine folder. If the file is there, restore it and add the game’s installation folder to your Exclusions Reinstall the Ubisoft Overlay
Navigate to the Ubisoft Connect installation folder (usually C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher UplayService.exe UbisoftConnect.exe
. Ensure they are not running in "Compatibility Mode" for an older OS, as this can cause library loading errors. Manual DLL Replacement (Last Resort) uplay_r1_loader.dll Close Ubisoft Connect completely (use Task Manager to
in the Ubisoft Game Launcher folder and copy it into the specific game's executable folder (where the
is located). This forces the game to use the updated library version. for a particular Ubisoft title?
This error typically occurs because a Dynamic Link Library (DLL) file related to Ubisoft's achievement system is missing, corrupted, or blocked by your security software. Since Uplay has been rebranded to Ubisoft Connect, older game installations often struggle to find the legacy files they need to launch. Quick Fixes
Verify Game Files: Open Ubisoft Connect, go to your Library, right-click the game, and select Verify files. This will automatically detect and replace missing components like the uplay_r1_loader.dll or orbit_api.
Reinstall Ubisoft Connect: Uninstall your current client and download the latest version from the Ubisoft Help website to ensure all legacy API paths are updated.
Check Antivirus Quarantine: Some antivirus programs mistakenly flag the achievement-tracking DLLs as "suspicious." Check your "Quarantine" or "Protection History" and restore any files removed from the game's installation folder.
Run as Administrator: 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.
Assassins Creed 4 Black Flag: AC4BFSP.exe Entry Point Not Found
8 additional answers. ... UPlay or AC 4. The error points to UPlay, and apparently the on-line 'achievement' BS that goes with it, Microsoft Learn
The error message "uplay-ach-earnachievement could not be located" typically relates to issues with Ubisoft's Uplay service, now rebranded as Ubisoft Connect. This error might occur when trying to access or redeem achievements (often referred to as "achievements" or "earnings" in the context of Uplay/Ubisoft Connect) for games that are linked to your Uplay/Ubisoft Connect account.
Here are some steps you can take to troubleshoot and potentially resolve this issue:
If you've tried all these steps and still encounter the error, consider contacting Ubisoft Support directly. They can provide more personalized assistance and might be aware of a specific issue affecting your account or game.
The error message "The procedure entry point uplay-ach-earnachievement could not be located in the dynamic link library" typically occurs when tThis specific "entry point" refers to a function the game expects to find in a DLL file—usually uplay_r1_loader.dll or uplay_r1_loader64.dll—which is either missing, outdated, or corrupted. Common Causes of the Error
Outdated Launcher: You are using an old version of Uplay that does not support the achievement functions required by newer games.
Antivirus Interference: Security software may have quarantined critical DLL files like uplay_r1_loader.dll, mistaking them for threats.
Corrupted Installation: A failed update or improper installation has left the Ubisoft Connect files in a "broken" state.
Administrative Restrictions: The launcher lacks the necessary permissions to access system-level libraries. How to Fix "uplay-ach-earnachievement" Not Found 1. Reinstall Ubisoft Connect (The Most Effective Fix)
Simply updating the launcher within the app might not replace the corrupted DLLs. A fresh install is often required. How To Fix Ubisoft Connect Launcher Not Working / Opening
If you're on a console (like PlayStation or Xbox), and you're experiencing similar issues, ensure your console and the game are updated. Also, check Ubisoft's support pages or community forums for known issues specific to your platform.
For PC players, corrupted game files can cause issues.