How to Fix Outlook Calendar Delegates Unable to Respond to Meeting Invites on Your Behalf

Summary

This guide helps you troubleshoot and resolve: How to Fix Outlook Calendar Delegates Unable to Respond to Meeting Invites on Your Behalf. Follow the steps below to fix the issue.

Common Causes

Calendar delegates are trusted colleagues or assistants who manage your schedule on your behalf. When a delegate cannot accept or decline meeting invitations sent to you, it usually means delegate permissions are missing, incorrectly configured, or Outlook is not syncing properly with Microsoft 365 or Exchange.

Quick Fix Steps

1. Confirm the delegate has been granted Editor permissions on your calendar.
2. Ask the delegate to open your shared calendar directly, rather than responding from their own inbox.
3. Restart Outlook to refresh delegate permissions and calendar sync.
4. Check that you are using a supported Outlook version connected to Microsoft 365 or Exchange.

Detailed Instructions

Grant or Verify Delegate Permissions

1. Open Microsoft Outlook on your desktop.
2. Select File from the top menu.
3. Choose Account Settings, then select Delegate Access from the dropdown.
4. In the Delegates window, select the delegate’s name and click Permissions.
5. Ensure Calendar is set to Editor (can read, create, and modify items).
6. Tick the box Delegate receives copies of meeting-related messages sent to me.
7. Click OK, then click OK again to close the Delegates window.

Ask the Delegate to Open Your Calendar

1. Ask the delegate to open their own Outlook profile.
2. Select File > Open & Export > Other User's Folder.
3. Enter your name or email address in the Name field.
4. Set Folder type to Calendar.
5. Click OK.
6. Once your calendar opens, the delegate can open meeting invitations sent to you and select Accept, Tentative, or Decline.

Refresh Outlook and Calendar Sync

1. Close Outlook completely.
2. Reopen Outlook and wait for all folders and calendar items to synchronise.
3. Ask the delegate to check whether they can now respond to a test meeting invitation.

Troubleshooting

Delegate Does Not Appear in the Delegates List

• Ensure you added the delegate using their full email address, not just a display name.
• Confirm the delegate is in your organisation’s address book.
• Remove the delegate and re-add them with Editor permissions on the Calendar folder.

Meeting Responses Are Not Updating Your Calendar

• Verify Delegate receives copies of meeting-related messages sent to me is enabled in Delegate Access settings.
• Ask the delegate to decline or accept from your shared calendar, not their personal inbox.
• Check that both you and the delegate are using Outlook connected to the same Microsoft 365 or Exchange environment.

Outlook on the Web (OWA) Differences

• Delegate access configured in Outlook desktop does not always carry over to Outlook on the web.
• If delegates use OWA, they may need to open your calendar via Open calendar > From directory.
• Meeting response behaviour in OWA can vary; Outlook desktop is recommended for delegate management.

If delegates still cannot respond to meeting invitations after following these steps, Open a Ticket with 220 Internet Services support.

Still Having Issues?