Error when deleting calendar appointments

Issue/Question

Error when deleting calendar appointments

Error: Could not complete the deletion. The items may have been already deleted or moved.

Environment

• Outlook

Cause

DelegateWasteBasketStyle registry key is set on the delegate's computer

Resolution

Add Author level permissions to Deleted Items on the sharer's email

1. Right-click Deleted Items
2. Click Properties
3. Click Permissions
4. Click Add
5. Search for the name of the person that is needing the calendar
6. Click their name
7. Click Add
8. Click OK
9. Click the name
10. Select Author in Permission Level dropdown
11. Click OK

For further explanation go to Microsoft Support