I am trying to uninstall older versions (2013, 2014) to make space, but I get the following error: 'The uninstaller cannot be run while ProSeries 2013 (2014) is in use. Please quit ProSeries 2013 before attempting to uninstall.

I don't have the program open, haven't used it in a very long time, and I have already re-booted my computer but have the same error. Phone support says they don't support these older years and that I should ask here.

I have Windows 10 Home. 

Thanks!