Often times when people update to Windows 10, iCloud stops functioning properly. Older versions of iCloud have some compatibility issues with Windows 10. Here’s a couple of methods you can try to get iCloud up and running again:

Method 1:
- Sign out and Sign back in
- – open iCloud and make sure outlook is closed
- Type “iCloud” and click “iCloud Desktop app” when it comes up
- Press the sign out button
- When asked whether you want to keep a copy of your iCloud contacts, calendar, and tasks, choose “Delete from computer”
- Wait a few minutes for all changes to be applied
- Sign in to iCloud again and sync Mail, Contacts, Calendar
Method 2:
- Complete iCloud re-install, repair and reconfiguration
- Open Account Settings in Outlook
- Select iCloud data file and press remove
- Close Outlook
- Open the iCloud Control Panel via the Start Menu and uncheck the option: Mail, Contacts, Calendar, and Tasks
- Download and install the latest version of iCloud from Apple website
- Reboot when prompted to
- Open the iCloud Panel and select Mail, Contacts, Calendar, and Tasks once again
- Start Outlook and verify that your iCloud data and buttons are available again


