Brug af Klassisk Outlook i Windows til administration af personlige mails, kalender og kontakter
Thanks for posting. Can you confirm if you’re using the full Outlook desktop app from Microsoft 365 or the new Outlook for Windows?
The iCloud add-in only works with the full desktop version. To fix the error, open Windows Settings, select Apps, then Default apps, and set Outlook as your default email. Then open Outlook, go to File, Options, General, and choose “Make Outlook the default program for E-mail, Contacts, and Calendar.” Restart Outlook and iCloud for Windows, then try again.