Disabling incompatible program in window 8.1

How can I remove a program file from incompatible app in Window 8.1? I tried to install Quickbook but the program won’t install because of compatibility issues, but when I check the task manager and the program is there. I tried to uninstall the program, but it was in the program list. Why is the prog file on the system when the prog didn’t install on the system?
