iCloud will not start during install Windows 10

Hi baplaw,

Thanks for posting in the Apple Support Communities. I see you're receiving an error message when you open iCloud for Windows.

Typically, you can resolve an issue like this by uninstalling and then reinstalling iCloud for Windows: Set up and use iCloud for Windows

"Turn off or uninstall iCloud for Windows

If you turn off a service in iCloud for Windows, your information won't automatically stay up to date in iCloud, and you won't see updates made on your other devices. Follow these steps to turn off a service or iCloud:

• To turn off a service on your PC, Open iCloud for Windows, then select or deselect that service. To save your changes, click Apply. 
• To turn off iCloud for Windows, open iCloud for Windows, then sign out. 

If you want to uninstall iCloud for Windows, remember to make a copy of your iCloud data and save it on your PC. Then sign out of iCloud for Windows on your PC, and follow these steps:

Windows 8 or later:

1. Go to the Start screen, right-click in the bottom-left corner or click, then select Control Panel.
2. Click Uninstall a Program.
3. Click iCloud > Uninstall.
4. When asked to confirm, select Yes.

Windows 7:

1. Choose Start menu > Control Panel.
2. Click Programs > Program and Features.
3. Select iCloud > Uninstall.
4. Click OK to continue."

Be sure to double-check that Windows is fully updated. Then, check out the "Set up iCloud for Windows" section of the link above to reinstall iCloud for Windows, and test it out.

Have a great day.

Hello baplaw,

Thanks for the update. We appreciate you taking the time to share that solution. Have a good one!