Sync between shared calenders failed since two weeks

Question

Sync between shared calenders failed since two weeks

Joachim Eichner 0

Dear Sir or Madam, Since the Office 365 outage two weeks ago, our shared calendars have stopped working—even though permissions have been granted and the Outlook app has been reset and reinstalled.

E.g.: J.shares a calendar with S.. The permissions are in place—just as they have been all along. Previously, whenever an entry was changed or created, it would appear immediately in the calendar because it synced right away. For the past two weeks, however, this has not been working. Additionally, the email that is supposed to be generated when an entry is made is no longer being sent. We urgently need this calendar, as we use it to manage our household. We are Premium customers, so it would be greatly appreciated if you could restore these features for us as soon as possible. The Outlook app support representative indicated that the issue lies on your end and that once it’s properly configured on your end, the Outlook app will sync correctly again.

I had to times contact with Microsoft. But everytime a got no answer.

Thank you very much,

J.

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Answer 1

Hi Joachim Eichner,

Note: This is a German-language forum. However, as your question was posted in English, I will respond in English.

First of all, I am sorry to hear about the difficulties you have been experiencing with your shared calendars. I completely understand how disruptive this can be, especially when your household relies on these calendars for day-to-day coordination.

As this is a community forum, we do not have access to Microsoft's backend systems, service health data for individual accounts, or the ability to investigate or modify service-side configurations. Therefore, our visibility is limited compared to what Microsoft Support can access.

Based on your post, you have already verified the sharing permissions, reset and reinstalled the Outlook app, and you were informed by an Outlook app support representative that the issue appears to be on the service side rather than within the application itself.

If a Microsoft support agent has confirmed that this is a temporary backend issue, then there is unfortunately little that can be done from the community side to accelerate the resolution. In such cases, the best course of action is to allow the responsible engineering teams time to restore normal service and monitor the issue through your existing support channel. Backend synchronization issues are not typically resolved through client-side troubleshooting once the service team has identified the root cause.

Thank you for your patience and understanding while this issue is being addressed.