Fast forward to the mid-2010s. Ubisoft revamped their ecosystem. The old "Ubisoft Game Launcher" was retired and replaced by Uplay, and eventually, Ubisoft Connect. The servers for the old launcher were taken offline. The software was scrubbed from official download sources.
Once installed, restart your PC and log in to your Ubisoft account. Fast forward to the mid-2010s
This is a classic compatibility issue, but it is fixable. Here’s why it happens and how to solve it. Fast forward to the mid-2010s