Recently, I began getting an error message upon shutdown. (see title) I finally located the solution and thought I might pass it on.
If you have Garmin Express installed on your computer,one of the more recent updates has evidently caused this. If you open Garmin Express, Tools, General Settings, and uncheck "always keep Garmin Express running in the background". That should solve your trouble.
Note that I already had this app disabled in windows startup and that had not solved the trouble.
Hopefully this helps someone out there.