Keep in mind I do not own Champions of Anteria on PC, so I cannot say if it does actually work. According to some forum posts it does though.

However, I can definitely say the game demo does not work at all. I am running it directly through Ubisoft Connect, and upon launching it there's a flash of the game's splash screen box with the text "Synchronising your saved games with the cloud", which suddenly closes after a couple of seconds.
I've done several hours of troubleshooting, with most of them resulting in no change. This includes clearing Connect's cache, ran the demo in Compatibility mode, disabling my antivirus software, updating my graphics driver, reinstalling Connect, and attempting to install Universal C Runtime (it's already on my PC, according to the software).

Running the demo as an administrator has a different result then the above - the game's splash screen box pops up, and there's an infinite loading circle with no text. I waited for 20 minutes to see if there was a change, and there was none, despite the loading circle's continuous movement.

I was able to run the game demo on my Windows 7 PC in 2016, but it seems to be broken now. Is there any other troubleshooting solution I am missing?