Whenever we see problems that common troubleshooting does seem to resolve, it is quite common to then perform a Repair of MS Office. From my understanding Repair checks various Office files dll/ocx/…, registry keys and the likes to ensure the integrity of all the programs. The entire process take a few minutes – on my PC it took approximately 10 minutes to Repair Microsoft Office Professional Plus 2013.
How-to Repair MS Office
Open the Control Panel

Select Uninstall a program

Select your Microsoft Office (in my case Microsoft Office Professional Plus 2013) from the program listing and then click on the Change button above the listing.
Select Repair and click on the Continue button.

Simply wait for the process to complete.

Actually I am having the same issue with my customers and it has just happened to me on W10 and Access 2007. This issue is intermittent but happens regularly to my customers. My solution is to reboot the computer and the problem disappears. However I could not agree more with Daniel when you have to tell your customers to reboot??? I just tried to repair Access2007 but it still needs to reboot to complete. It would be awesome to have some MS Expert figure this one out!!!
Thank you people, it seems that the repair of my office tool could help! I will try it out and let you know.
thanks again,
Nick