I ran in to this on another forum and thought it should be listed here, as it's a good/easy fix.
I'm a computer technician and have been running Windows 10 on my desktop computer since it's been available. Most of my customers are still on Windows 7, but the numbers will be increasing on W10.
Keep up the good work on preaching backup...I do also with ALL my customers, as it's VERY important to have backups!!