How to Fix Calendar Events Appearing as 'Busy' Instead of 'Free' After Declining a Meeting in Microsoft 365

Summary

This guide helps you troubleshoot and resolve: How to Fix Calendar Events Appearing as 'Busy' Instead of 'Free' After Declining a Meeting in Microsoft 365. Follow the steps below to fix the issue.

Common Causes

When you decline a meeting invitation in Microsoft 365, the event should be removed from your calendar and your availability should return to "Free." If the event remains on your calendar marked as "Busy," colleagues will be unable to book time with you during that slot. This is typically caused by synchronisation issues between Outlook and the Microsoft 365 server, or by using a third-party calendar application that does not correctly process the decline response.

Quick Fix Steps

1. Open Outlook and ensure you are connected to the internet.
2. Open the declined meeting from your calendar and click Remove or Delete.
3. Restart Outlook to force a synchronisation with the Microsoft 365 server.
4. Check your calendar availability using Outlook on the Web to see if the event has cleared.

Detailed Instructions

Remove the Event in Outlook for Windows

1. Open Outlook and go to the Calendar view.
2. Locate the declined meeting on your calendar. It may appear with a strikethrough or remain as a standard block.
3. Right-click the event and select Delete.
4. If prompted, choose to delete only this occurrence or the entire series.
5. Restart Outlook to synchronise your mailbox with the server.
6. Refresh your calendar view to confirm the time slot now shows as Free.

Remove the Event in Outlook on the Web

1. Sign in to Outlook on the Web at outlook.office.com.
2. Select the Calendar icon from the left-hand navigation.
3. Click on the declined meeting event.
4. Select Delete from the event details pane.
5. Confirm the deletion when prompted.
6. Wait a few moments and refresh your browser to verify the slot is available.

Remove the Event in Outlook for Mac

1. Open Outlook for Mac and navigate to Calendar.
2. Right-click (or Control-click) the declined meeting.
3. Select Delete from the context menu.
4. Choose whether to delete the single occurrence or the full series.
5. Restart Outlook to push the change to the Microsoft 365 server.

Remove the Event in Outlook Mobile (iOS and Android)

1. Open the Outlook app on your mobile device.
2. Tap the Calendar icon at the bottom of the screen.
3. Tap on the declined meeting event.
4. Select Delete or the trash icon.
5. Choose to delete only this occurrence or the entire series.
6. Force close and reopen the Outlook app to synchronise with the server.

Troubleshooting

Check Synchronisation Status

If the event reappears after deletion, your Outlook client may not be syncing correctly with the Microsoft 365 server.

• Confirm you have an active internet connection.
• Look for the Connected to: Microsoft Exchange status indicator at the bottom of the Outlook window.
• If you see Disconnected or Working Offline, click the Send/Receive tab and select Work Offline to reconnect.

Use Outlook on the Web as a Reference

Outlook on the Web connects directly to the Microsoft 365 server. If the event is gone from Outlook on the Web but still appears in your desktop or mobile app, the issue is local to that device. Delete the event via Outlook on the Web, then restart your desktop or mobile application.

Check for Delegate or Shared Calendar Access

If you manage a shared calendar or have delegate access to another user's mailbox, ensure you are not viewing the declined event on someone else's calendar. Verify you are looking at your own Calendar folder and not a shared calendar listed under Shared Calendars.

Third-Party Calendar Applications

If you access your Microsoft 365 calendar through Apple Calendar, Google Calendar, or a mobile native calendar app, the decline response may not have processed correctly.

• Remove the account from the third-party application and re-add it.
• Alternatively, manage all meeting declines directly through Outlook on the Web or the Outlook desktop application to ensure the server receives the response.

Declining a meeting sends a response to the organiser. If you simply delete the event without declining, the organiser will not be notified and your availability may not update correctly.

Avoid deleting the entire meeting series unless you intend to remove all future occurrences. If you only need the current slot cleared, choose to delete the single occurrence.

If the calendar event continues to show as "Busy" after following these steps, Open a Ticket with 220 Internet Services support for further assistance.

Still Having Issues?