how to fix outlook crashing on opening calendar

Question

how to fix outlook crashing on opening calendar

Dawn Dancing Otter 0

For the past 2 weeks, my outlook account has been crashing and restarting whenever I open my calendar.

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Answer 1

Julie Huynh 3,850 Independent Advisor

Dear @Dawn Dancing Otter,

Good day! Welcome to Microsoft Q&A forum!

Regarding your situation, could you please clarify the following so I could better understand what might have caused the issue:

From your "Microsoft Teams" question tag, may I ask if you encounter this issue on Teams desktop app, Teams on the web, or both?
Does the issue occur for all users or only your account?
Does the crash happen immediately when selecting Calendar, or after a specific calendar or event loads?
Are you seeing any error messages before Teams closes or restarts?
Have there been any recent changes, such as Teams updates, device changes, or policy changes in your organization?

In the meantime, kindly try the following suggestions and let me know if the issue persists afterwards:

Sign in to Teams on the web and check whether the Calendar opens normally there
Sign out of Teams and sign back in
Clear the Teams cache and test again
Ensure that Teams and Windows are fully updated
If possible, test from another device to see whether the behavior is device-specific

If you’re able to share a bit more about your situation, I might be able to suggest some helpful next steps.

Kindly let me know when there are updates or if you need further assistance. Any updates you’re able to share would be really helpful. I appreciate your time and look forward to hearing how things are going!

Thank you for your time and patience.

Julie Huynh 3,850 Reputation points Independent Advisor

2026-09-30T15:56:05.3166667+00:00

Dear @Dawn Dancing Otter,

Good day! I hope everything is going well on your end.

It’s been a little while, so I just wanted to follow up and see how things are progressing with your concern. If you've run into any challenges or if there's anything further that I can help with, please don’t hesitate to let me know. Any updates you’re able to share would be greatly appreciated.

Thanks again for your time and attention! I look forward to hearing from you.
Dawn Dancing Otter 0 Reputation points

2026-10-05T18:27:29.3866667+00:00

Hi, thanks for responding. The problem hasn't changed at all from the outlook app on my Macbook. I am accessing my outlook calendar from my browser, which isn't ideal, but is a temporary adaptation.
Julie Huynh 3,850 Reputation points Independent Advisor

2026-10-06T14:24:01.2566667+00:00
Dear @Dawn Dancing Otter,

Thank you for the update. I appreciate you taking the time to clarify that the issue is occurring in the Outlook app on your MacBook, while you're currently able to access your calendar through a web browser as a temporary workaround.

Before jumping to any conclusions, could you please help me with a few additional details?

Does the issue occur only with your own calendar, or also when opening shared calendars?

Are any of your colleagues experiencing the same behavior?

I also wanted to mention that Microsoft has recently identified a Microsoft 365 service issue affecting calendar access for some users. As part of this issue, users may experience problems opening or viewing calendars and may encounter errors when calendar data cannot be retrieved. Microsoft has identified the root cause and is currently deploying a fix, with a targeted resolution date of October 9, 2026.

While your symptoms are not an exact match at this stage, I'd like to gather the details above first to determine whether your issue may be related to this known service incident or whether we're dealing with a separate Outlook for Mac client issue.

I understand this has been impacting your workflow for a couple of weeks now, and I appreciate your patience. I look forward to your update so we can continue narrowing this down together.
Julie Huynh 3,850 Reputation points Independent Advisor

2026-10-09T13:40:58.9166667+00:00

Dear @Dawn Dancing Otter,

Good day! I hope everything is going well on your end.

It’s been a little while, so I just wanted to follow up and see how things are progressing with your concern.

Kindly let me know when there are updates or if you need further assistance.