[2021] It wants to Download AGAIN? (Lost track of where game is on disk?)

I renewed my UPlay+ subscription over the weekend, downloaded the game -- it took 2.5 hours to get all 150 GB -- and played probably 10 hours.

Today when I go back to play, instead of saying "Play" like before, Ubisoft Connect says "Download". And "There is not enough space on the hard disk to complete the installation. Please free up some space on the disk, or change the game installation folder and try again." (Yeah, maybe the reason there's no space is that the 150GB game is already taking up space on my disk?)

Under the Download button there's some small text that says "Locate installed game." When I click on that, I'm able to browse to This PC> Local Disk > Program Files (x86) > Ubisoft, it says "Cannot verify integrity of game files". And it wants to re-download the game.

I was just playing it 2 days ago, and I haven't used my Windows partition for anything else since then.

How can I avoid having to do another 2.5 -hour download for the game I was just playing??


Thanks.