Omar,
This “Christine” person is just giving out mis-information.
I had iCloud working ok on this Win 11 machine, with bookmark syncing (Chrome to multiple Safari clients), and iCloud Drive. iCloud provides features not present in Microsoft OneDrive. I got this working by following two users’ suggestions; one from a Microsoft support forum and one from an Apple support forum.
Then I installed a Dell BIOS firmware update yesterday, rebooted, and now iCloud is broken again. The app will run, but pops up it’s status window on top of whatever else is on the screen, even though it’s not doing anything.
Quick fix for this is to log out of iCloud (which will delete your local copy of iCloud drive files). After you log out, close the iCloud window.
Then right-click on the iCloud start menu item and select "more"-"run as administrator." Log in to iCloud, but do not turn on any services. After clicking “finish,” go back to iCloud and first turn on password sync and wait for it to finish. Then go back to iCloud turn on the other services you use. That will get you working without passwords or pop-ups until you need to reboot. And all your iCloud drive files will reload after the app is working again.
But you’ll need to research the web to find the correct solution (for your system) to get iCloud working again without going through this routine again each time you reboot the computer.