Assassins Creed 4 Black Flag: AC4BFSP.exe Entry Point Not Found
This comprehensive troubleshooting guide explains why this error happens and provides step-by-step methods to get your game running smoothly again. What Causes the UPLAY_ACH_EarnAchievement Error?
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 uplay-ach-earnachievement could not be located
: 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 .
Uplay transitioned into Ubisoft Connect. During this migration, many old file paths and entry points were renamed or deprecated, leaving legacy games searching for code that the new launcher doesn't prioritize. Corrupted DLLs: Files like uplay_r1_loader.dll uplay_r1.dll Assassins Creed 4 Black Flag: AC4BFSP
Scan for recent blocked items around the time you tried starting the game. Look for an entry targeting uplay_r164.dll . Click and select Restore .
: You are using an old version of Uplay instead of the modern Ubisoft Connect . If the file is there, restore it and
: Antivirus programs, including Windows Defender, frequently flag and quarantine files like uplay_r1_loader.dll or uplay_r164.dll , mistaking their background overlay injection behavior for malicious activity. Step-by-Step Fixes for the Error
Manually navigate to C:\Program Files (x86)\Ubisoft\ and delete the entire Ubisoft Game Launcher folder.
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.
How to Fix the "uplay-ach-earnachievement could not be located" Error