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Outlook and other systems: Current disruption affecting Microsoft 365

2026-11-13 There is currently a technical fault affecting various Microsoft 365 services. Leuphana University is also affected by this fault.

There is currently a technical fault affecting various Microsoft 365 services. Leuphana University is also affected by this fault.

1. What does this mean for you?

Due to a technical fault within Microsoft’s infrastructure, you may currently experience problems logging in to and accessing various Microsoft 365 applications.

Services that may be affected include:

  • Outlook / Exchange Online: Mailboxes may be inaccessible or emails may be delivered with a delay.
  • Microsoft Teams: Problems may occur in particular with calendar functions, meeting invitations, chats and the synchronisation of contacts.
  • SharePoint Online: There may be restrictions on file sharing.
  • Other Microsoft services: Applications such as Planner, To Do and Power BI may also be partially affected.

2. What can you do?

Please try using the affected applications again at a later time.

Users who are already logged in should avoid logging out unnecessarily, as logging in again may also fail.

Please also avoid resetting or reinstalling applications prematurely.

3. What is the current status?

Microsoft is aware of the disruption and is working to resolve it as a matter of high priority. Initial technical adjustments have already been made and are showing improvements in the stability of the affected systems. The changes are being gradually rolled out to other parts of the infrastructure.

A full resolution of the disruption has not yet been confirmed.

4. What happens next?

We are continuously monitoring the development and status of the disruption. As soon as we receive new information or updates from Microsoft, we will publish them promptly and keep you informed of further developments.

Important: This is a disruption on Microsoft’s end, which is also affecting Leuphana University. You therefore do not need to make any changes to your devices or personal settings at this stage.

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