Games Appearing In Sidebar While Not Installed, Unable To Install Them

I bought a new PC a couple of months ago and moved one of my HDDs from my old system to my new one when I was setting it up. I had used the drive to install some of the games from gamepass on it, and had not deleted them from the drive when I moved it. Since
then, I have an issue with Halo:MCC and AoE2E showing up in the side bar of the Xbox app even though they are not installed. Neither of these two games were installed on the drive which I migrated from my old system.





I want to reinstall Halo now, however I am unable to do so. I can choose the drive I wish to install it to, the install button briefly flashes to "Preparing 0%" and then changes back to install straight away.

The drive that I have brought over from the old system has been completely formatted and no longer has any data on it. I have also tried uninstalling the Xbox app and reinstalling it, however the games still show in the sidebar after this and I am still
unable to install them. I am able to install any other game from the app fine, it is just these two games I have the problem with.

Any help would be greatly appreciated, it's driving me mad at this point!

:)