The fastest way to cancel a meeting

Open Outlook and go to your calendar. Find the meeting you want to cancel, click on it once to open the event details, then look for the Delete button (or press Delete on your keyboard). Outlook will ask whether you want to delete just this one instance or the entire series if it repeats. Choose what applies, then click Delete Event. That's the cancellation itself — but Outlook does not automatically tell attendees you've cancelled unless you take one more step.

After you delete the event, Outlook shows a notification asking if you want to send a cancellation message to attendees. Click Send Cancellation Message to notify everyone. If you skip this step, the meeting stays on their calendars as if nothing happened, and they'll show up expecting to meet you. Always send the cancellation message unless the meeting was private or you have a specific reason not to.

If you created the meeting, you're the organizer and can delete it outright. If someone else created it and invited you, you can only remove it from your own calendar — the meeting stays on everyone else's unless the organizer cancels it.

Key Takeaways

  • Delete the meeting from your calendar, then click Send Cancellation Message when Outlook prompts you to notify attendees.
  • Only the meeting organizer can truly cancel a meeting; other attendees can only remove it from their own calendar.
  • If the meeting repeats, Outlook asks whether you're cancelling just this one instance or the whole series.
  • Deleting the event without sending a cancellation message leaves it on attendees' calendars, so they won't know it's off.

Cancelling a recurring meeting

When you delete a meeting that repeats — daily, weekly, monthly, or on a custom schedule — Outlook stops and asks which instances you want to remove. Click This event to cancel only that one date, or This and following events to cancel this meeting and all future occurrences. Choose All events only if you want to wipe out the entire series from the start.

After you choose, Outlook again offers to send a cancellation message. Send it so attendees know which meetings are off. If you cancelled only one instance, the message tells them that specific date is cancelled but the rest of the series continues. If you cancelled the whole series, they'll see that all future meetings are gone.

Cancelling when you're not the organizer

If someone else created the meeting and sent you an invitation, you cannot cancel it for the group. You can only remove it from your own calendar by deleting it. The meeting stays on everyone else's calendar, and the organizer still sees you as invited.

If you need the meeting cancelled, contact the organizer and ask them to cancel it. They can then send a cancellation message to the whole group. If the organizer is unavailable or unresponsive, you can decline the meeting invitation (which signals to them that you won't attend), but that does not cancel it for others.

What happens after you send a cancellation message

When you send a cancellation message, Outlook emails it to everyone who was invited. They receive it as a notification that the meeting is off. On their end, the meeting disappears from their calendar automatically — they don't have to delete it themselves. If the meeting was on their calendar for weeks, they'll see it vanish once they open Outlook or refresh their calendar view.

Some attendees may not see the cancellation right away if they're offline or if Outlook is not syncing. But once they open Outlook again, the cancelled meeting is gone. If you accidentally sent a cancellation and want to reschedule, you can create a new meeting invitation and send it out; there's no "undo" for a cancellation message, but a new invitation makes the old one moot.

Cancelling a meeting you created but no longer need

If you organized the meeting and realize it should not happen, delete it from your calendar and send the cancellation message. Outlook handles the rest — attendees get notified and the meeting leaves their calendars. You do not need to write a separate email explaining why; the cancellation message itself is enough unless the reason matters to the group (for example, if a project important date moved and that's why the status meeting is off).

If you want to explain the cancellation, you can add a note in the cancellation message before you send it. Click the message Outlook shows you and type a brief explanation, then send it. This is optional but helpful if attendees might wonder why the meeting disappeared.

Removing a meeting from your calendar without notifying others

Sometimes you want a meeting off your calendar but do not want to cancel it for the whole group — for example, if you're delegating your role to someone else and they'll attend instead. Right-click the meeting and choose Delete, but when Outlook asks if you want to send a cancellation message, click Don't Send. The meeting disappears from your calendar only. Everyone else still has it, and the organizer does not know you removed it.

Use this option carefully. If you're supposed to attend and you silently remove the meeting, the organizer may think you're coming when you're not. It's usually better to decline the invitation (which notifies the organizer that you won't be there) or to tell the organizer directly that you're stepping back.

Frequently Asked Questions

Can I undo a cancellation message I just sent?

No, once you send a cancellation message, it goes to attendees and you cannot take it back. If you cancelled by mistake, send a new meeting invitation right away to reschedule. Attendees will see the new invitation and understand the meeting is back on.

What if I only want to cancel for some attendees, not all?

Outlook does not let you cancel a meeting for part of the group. You cancel it for everyone or no one. If you need to exclude someone, delete the original meeting, send a cancellation, then create a new meeting with only the attendees you want.

Do attendees get a notification if I delete the meeting without sending a cancellation message?

No. If you delete the meeting and click Don't Send, attendees see no notification. The meeting stays on their calendar as if nothing happened. Always send a cancellation message unless you have a specific reason not to.

Can I cancel a meeting on my phone or tablet?

Yes. Open the Outlook app, find the meeting, tap it to open the details, then tap the delete or trash icon. The app will ask if you want to send a cancellation message. Tap yes to notify attendees the same way you would on a computer.