iCloud for Windows can't upgrade, uninstall, or repair. How can I proceed? Lately Apple Software Update has been popping up with a recommended upgrade to iCloud 5.0. (I am currently on 4.1.1.53, on Windows 10 with the Fall Update).

Each time I attempt to upgrade, the upgrade fails.

I tried uninstalling the application using the uninstall utility, but that failed as well.

Finally, I tried to "Repair" the program, but that did not work either.

Any other suggestions? At this point I just want iCloud off Windows for good.
Try to remove manually all the file in:


c:\program files x86\common files\apple\internet services
or
c:\program files\common files\apple\internet services


Then, via https://discussions.apple.com/message/29281327#29281327 -


Press Win + R (the "Run" prompt should appear)
Type "regedit" (for the registry editor) &amp; press enter.
Make a registry backup first: press File > Export and save current state of registry
Find and delete all folders containing "icloud"


Finally, you should be able to restart the computer and download iCloud from the Apple Web Site

iCloud for Windows

Reinstall the program.