It looks like you're facing an issue with your iCloud Calendar in Outlook for Windows 11. The error message you've encountered indicates a problem with the MAPI (Messaging Application Programming Interface) related to Apple Internet Services. Let’s break down how to troubleshoot this situation effectively:
Possible Solutions:
- Ensure iCloud and Outlook are Up-to-Date:
- Make sure you have the latest versions of both iCloud and Microsoft Outlook installed. Updates can fix bugs that might be causing the error.
- Repair the iCloud Installation:
- In some cases, repairing the iCloud installation can resolve issues related to syncing and connectivity.