The most frequent cause of this error is the absence of the correct client files.
When launching via Steam or an older retail disc, the game tries to find the legacy "Ubisoft Game Launcher" (Uplay). Because this legacy client has been replaced by the modern Ubisoft Connect, the game fails to detect it and throws an error. The most frequent cause of this error is
Navigate to the official Ubisoft Connect website to download the latest desktop application. Navigate to the official Ubisoft Connect website to
Windows permissions can block old games from communicating with newer launcher apps. How To Fix Ubisoft Connect Launcher Not Working / Opening Download and Install Ubisoft Connect Manually
Launch from Steam; it will now detect the active client and open correctly. 2. Run Both Steam and Ubisoft Connect as Administrator
Use the guide below to manually link and run the game using the current software. 🛠️ Step-by-Step Fixes for the Launcher Error 1. Download and Install Ubisoft Connect Manually