I cancelled my subscription to Adobe now that I'm done with college and no longer need it for classes. I've successfully uninstalled all of my other Adobe apps except for InDesign. Everytime I try to uninstall it, it asks me to save my work before continuing. The issue is that my subscription has already ended so I can't open the app to save my work. I'm kind of stuck because I can't uninstall the app without saving my work and I can't save my work because my subscription is ended and I can't open the app now.
It seems that you still have the InDesign process running. Check in Task Manager if there is a process named InDesign, if so then kill it and then try again. If you are unfamiliar with using Task Manager see the following article