Feature/InfoPath form deactivate

Is there a way to find out where a particular InfoPath form is activated? My uninstall-spfeature command fails becuase it says "the feature ID <guid> is still activated within this farm or staqnd alone installation. Deactivate this feature in the various locations where it is activatged or use -force to force uninstallation of this feature".

I want to find out where the feature (InfoPath form) is activated so I can deactivate it first. How do I get this info?