

Make sure that all of your iCloud Photos are backed up into a DIFFERENT DIRECTORY, and preferably also onto an external drive.

To find out where they are, open iCloud for Windows, and click on the Options button to the right of "Photos." A screen will open showing you the location of your iCloud photos.)

So, first of all, VERY IMPORTANT, make a backup of C:\Users\YOUNAME\pictures\iCloud Photos (Your iCloud Photos may be in a different directory. IMPORTANT: This procedure will delete all the existing iCloud photos off of your computer, so you must BACK THEM UP first. Finally, I found a solution in the Apple Forums which fixed it. I tried reinstalling the iCloud for Windows software and it did not solve the problem. I tried signing out and signing back in and it did not fix the problem. For several months I have been getting the following error message: I am running Windows 10 on an HP Pavilion computer.
