Persistent error window keeps popping up on my computer

My computer has started displaying this error window:

Windows cannot find C:\Program Files (x86)\Adobe\Acrobat DC\Acrobat\AcroTray.exe. Make sure you typed the name correctly, and then try again

This just pops up without even having touched anything related to Acrobat, and when I close the window, it's back up again within seconds. I can't right click on files anymore to do basic things like copy/paste.

what do?