[German]A quick information for all blog readers: Are you experiencing problems with Exchange Online? Microsoft is investigating reports of problems with Exchange Online in connection with the Microsoft Teams calendar. Some users are reporting a 404 error when attempting to access it. Here is some information on what I know so far. Addendum: Seems to affect more Microsoft 365 services.
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I came across the following tweet via X – but a reader had already sent me a personal message about this on X.
An issue is being investigated that affects users trying to access Exchange Online or features in the Microsoft Teams calendar. For more information, see MO941162 in the Admin Center (I don't have access to it). A user writes that outlook.office.com now returns HTTP error 404, i.e. the requested resource is not found.
It also seems to affect German users, as I have just seen on allestoerungen.de (see picture above). Shortly after 8:00 a.m., just in time for the start of the week, various users seem to have noticed that there are problems with Microsoft 365.
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I have now also received reports from Sweden that Outlook services are affected there. Another user is reporting Outlook crashes (which may be a coincidence), while others are unable to access Outlook. Users in France are also receiving errors – I have a picture of a 503 error when trying to access Outlook. Other users write that RoomsFinder does not work for new room bookings. Anyone affected?
There are signs that the disruption is affecting more services than just Teams. Someone from Greece reports that the security.microsoft.com page loads endlessly – I can't test this, but the SSO page comes up immediately here. Other users are reporting problems with Sharepoint, Hotmail and OneDrive.
Microsoft Purview is extremely slow and Dynamics 365 is no longer tracking emails, according to other posts. The reports of various errors with online services vary – the Microsoft Azure status portal has probably not reported anything.
Microsoft wrote around 11:54 a.m.: "While we continue to work on fixing the issue, we have included a comprehensive list of affected services and scenarios in the 'More information' section. For more information, see MO941162 in the Admin Center." Daniel has since sent me a screenshot of the entry.
A user wrote to me on X that according to the latest incident report, the Admin Center and other things are now also affected. In other words, more things have already disintegrated. And another user noted that security.microsoft.com is also hardly loading or not loading at all. There must be more affected than Microsoft is publicly admitting. The user writes that they have users in their company who receive uncontrolled SPAM mails. Queries in the Security Center for analysis are hardly possible.
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