icloud not working with outlook 365 on win 11

Hi Alpinist_,

For help with syncing iCloud contacts and calendars, test the steps found in the article here: If your iCloud Contacts, Calendars, or Reminders won’t sync

Specifically, the section for Outlook at the bottom of the article which states:

"Microsoft Windows 

After each step, check your contacts, calendars, or reminders.

Refresh Outlook

Click Refresh  in Outlook.

Turn off iCloud Contacts and Calendar, then turn it back on

1. Open iCloud for Windows.
2. Deselect Mail, Contacts, and Calendars, then click Apply.
3. Wait a few seconds, select Mail, Contacts, and Calendars, then click Apply.
4. Open Outlook.

Make sure the iCloud Outlook Add-in is active

In Outlook 2010 and later:

1. Click the File menu.
2. Click Options in the left panel.
3. Click Add-Ins in the left panel of the Outlook Options window.
4. Look at the list of add-ins in the Active Application Add-Ins section.
5. Select the iCloud Outlook Add-in.

Learn how to manage Add-ins with Microsoft Outlook.

Check your default account in Outlook

In Outlook 2010 and later:

1. Click the File menu.
2. Select Info > Account Settings > Data Files. 
3. If iCloud is the default account in the Comments column, select a different account, and click Set as Default.

Restart your computer

After you restart your computer, check if you fixed the issue."

If the issue remains, contact Apple Support directly to further assist.

Contact - Official Apple Support

Contact Apple for support and service - Apple Support

Best.