The error "UPLAY_ACH_EarnAchievement could not be located" is a "Procedure Entry Point Not Found" error. It indicates that an executable file is trying to call a specific function (UPLAY_ACH_EarnAchievement) from a Dynamic Link Library (DLL) file, but the function is missing, corrupted, or the DLL itself is the wrong version. Core Causes
Outdated Launcher: This error most frequently occurs when a game (often an older title like Assassin's Creed IV: Black Flag) tries to use an outdated version of the Uplay/Ubisoft Connect API that does not match the version currently installed on your PC.
Missing or Corrupted DLLs: Files like uplay_r1_loader64.dll or uplay_r1.dll may be missing or have been quarantined by your antivirus as a "false positive".
Overlay Issues: Modern versions of the Ubisoft Connect overlay sometimes conflict with older games' achievement-tracking calls. Recommended Solutions
This error usually occurs when the Ubisoft Connect (formerly Uplay) launcher is outdated, or its core library files (DLLs) have been corrupted or blocked by your antivirus. The specific mention of "earnachievement" indicates the launcher's achievement-tracking module is failing to initialize when the game starts.
Here is a step-by-step guide to fixing the "uplay-ach-earnachievement could not be located" error. 1. Reinstall Ubisoft Connect (Recommended)
This is the most effective fix, as it replaces all corrupted or missing DLL files with the latest versions. Go to Control Panel > Uninstall a program. Select Ubisoft Connect and uninstall it.
Important: When asked if you want to uninstall your games, select No to keep your game files.
Download the latest version directly from the Ubisoft Connect Website and install it. 2. Verify Game Files
If the error persists, the game's local link to the launcher might be broken. Open the Ubisoft Connect Desktop App. Go to the Games tab and select your game. Click Properties on the left menu and select Verify files. 3. Check for Antivirus Blockages uplay-ach-earnachievement could not be located
Sometimes, antivirus software incorrectly flags uplay_r1_loader64.dll as a threat and quarantines it.
Make sure your Windows operating system is up to date, as updates often include fixes for known issues.
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.
Antivirus software can sometimes interfere with the Uplay client. Temporarily disable your antivirus software and try launching the Uplay client again.
This error often means a missing or unregistered .dll related to achievements.
regsvr32 /u "C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\uplay_ach.dll"
regsvr32 "C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\uplay_ach.dll"
(Adjust path if Ubisoft is installed elsewhere)For PC players, corrupted game files can cause issues.
The error "uplay-ach-earnachievement could not be located" is a file integrity issue. In 90% of cases, simply using the "Verify Files" function within the Ubisoft Connect launcher will resolve the problem immediately. Close Ubisoft Connect completely (use Task Manager to
The error message "The procedure entry point UPLAY_ACH_EarnAchievement could not be located" is a technical conflict that typically occurs when a Ubisoft game (such as Assassin's Creed IV: Black Flag) is launched through Steam using an outdated version of the Ubisoft Connect (formerly Uplay) launcher. Core Cause of the Error
This specific error is an "Entry Point Not Found" issue involving the uplay_r1_loader.dll or uplay_r1.dll files. It happens because:
Outdated Software: Steam often packages older Ubisoft games with an obsolete version of Uplay that is no longer compatible with modern Windows environments or the current Ubisoft infrastructure.
File Mismatch: The game executable is trying to call a function (EarnAchievement) that the current, possibly corrupted or outdated, DLL files in your game folder do not support. Recommended Solutions Perform a Clean Reinstall of Ubisoft Connect
Manually uninstall "Ubisoft Connect" or "Uplay" via the Windows Add or Remove Programs menu.
Navigate to your installation directory (usually C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher) and manually delete any remaining folders.
Download and install the latest version directly from the official Ubisoft Connect website. Verify Integrity of Game Files
If you are using Steam, right-click the game in your Library, select Properties, go to Installed Files, and click Verify integrity of game files.
This process checks for missing or corrupted DLL files like uplay_r1_loader.dll and replaces them. Run as Administrator why it happens
Locate the game's executable file (the .exe) in the game folder.
Right-click it, select Properties, go to the Compatibility tab, and check Run this program as an administrator. Manual File Replacement (Advanced)
Some users have resolved this by manually replacing the uplay_r1.dll and uplay_r1_loader.dll files in the game's main directory with updated versions sourced from a working Ubisoft Connect installation.
Are you experiencing this error with a specific game, or would you like a guide on how to manually back up your save files before attempting a reinstall?
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).
If verifying game files doesn't resolve the issue, try repairing the Uplay installation:
C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher).UbisoftGameLauncher.exe file as an administrator.If you are an avid player of Ubisoft titles such as Rainbow Six Siege, Assassin’s Creed Valhalla, Far Cry 6, or Watch Dogs: Legion, you have likely relied on the Ubisoft Connect launcher (previously known as Uplay) to track your progress, connect with friends, and—most importantly—earn achievements.
Nothing disrupts a perfect gaming session quite like an error message. One of the most cryptic and frustrating errors appears when you try to view, sync, or unlock an achievement:
"uplay-ach-earnachievement could not be located."
This article dives deep into what this error means, why it happens, and—most critically—how to fix it permanently.