I have Access 2013, Windows 10, on a MAC with Parallels.
I changed the directory where my Access files are stored. Then started receiving the message in the Title above. I clicked OK, but did not know what to do about the message. Now Access and Windows 10 takes a full minute or more to do anything. It just spins the little donut until I "force quit".
I found directions to correct the working directory problem (today) but they are for Access 2010. Step 2 in the process says Click the "File" menu followed by "Options". When I click "File" I do not see the word "Options" anywhere.
Sorry I don't seem to be able to even describe the problem very well.