Since the latest update in Windows 10 Version 1709 everyone of my computers was having the same problem. I would right click on word docs, excel docs, pdfs, jpgs and nothing would happen with the exception of jpg files. It would ask me what size I would like to send the file as. Once I chose the size, selected attach, nothing would happen.

Solution: I went to Add/remove programs in the control panel and when I got to Microsoft Office, I selected modify (make sure all of your MS office programs/apps are closed), after that I chose repair and then OK, and after a reboot, everything worked like it was supposed to. I had to do this to all of my computers after this latest patch. 12/1/2017