Forum Discussion
Install failures - App cannot be installed due to a supersedence relationship conflict
From what I can see, there could be issues if there were dependencies or supersedence on the old version - but that's not the case here. How is the assignment on both apps?
This is not a fix to this issue, but if I were you, I would use PSADT, remove the old versions first, and install the newest version—without any dependencies or supersedence.
I realize this is an old post but I just ran into this issue myself. If you click on the superseded app, and then look at the "relationship viewer" you may find that while the 2 related apps may not have any dependencies, but that other apps are dependent on it. In my case Unity hub (3.4) was being replaced by (3.15) but the 3.4 version was a dependency of another app Unity Editor. Hopefully this helps someone down the line.