How to Hide Your Calendar from Everyone in Microsoft 365

Outlook on the web

Not available.

Outlook for Windows

1. Click the calendar icon in the navigation pane.
2. Select the calendar you want to hide.
3. On the  Home tab, in the Share group, click Calendar Permissions.
4. Click the Permissions tab and select Default.
5. In the Permissions section set the permission for Read to None.
6. Click OK to save your changes.

Outlook for Mac

1. At the bottom of the navigation pane, click Calendar.
2. Select the calendar you want to hide.
3. On the Home tab, click Sharing Permissions.
4. Click the Permissions tab and in the list of names select Default.
5. Set the Permission Level  for Read to None.
6. Click OK to save your changes