Microsoft: Cloud problems disrupt Outlook and Teams

Since Monday, there have been disruptions to Microsoft 365 services, especially for Outlook and Teams. These should be largely resolved.

Save to Pocket listen Print view
Server in the center, connections to surrounding clients, encryption symbols

(Image: Bild erstellt mit KI in Bing Designer durch heise online / dmk)

2 min. read

Microsoft has been experiencing disruptions to its Microsoft 365 services since Monday of this week. Exchange Online, Outlook and Teams were only partially usable as a result. The problems should have been largely resolved by the time of reporting.

Microsoft's cloud status still shows ongoing problems with Microsoft 365 services.

(Image: Screenshot / dmk)

Microsoft's Cloud Status Monitor currently shows the disruption as still acute. This means that Outlook.com users cannot access their mailboxes, for example, neither with Outlook on the Web, nor with the Outlook desktop client, not via REST API and also not via Exchange ActiveSync (EAS). "Users may notice delays in mail transport," the company writes there.

There were also restrictions when using Teams. Microsoft lists that virtual events such as webinars and meetings cannot be created or updated, the Teams calendar cannot be used, meetings cannot be joined, chats cannot be used, new teams and channels cannot be created or changed and other problems that users may encounter.

Microsoft posted several status messages on X during the course of the disruption.

After some time, it became clear that Microsoft's IT teams had made a change that had apparently caused these effects. According to this, it was not a cyberattack from inside or outside. As a first step, the technicians have reversed the change and investigated whether further measures need to be taken. "We are deploying a fix that is currently progressing through the affected environment. We are starting with manual restarts of a portion of the machines that are in an unhealthy state," the company wrote there.

By Monday evening, the fix had been deployed to 98 percent of the affected environments. The technicians reported that the restarts required to solve the problem would be carried out as quickly as possible. However, the disruption apparently still has some lingering effects, which is why the cloud status entry still shows them.

At the end of July, there was also a large-scale disruption to the Microsoft cloud. At that time, however, it was caused by distributed denial of service attacks (DDoS).

(dmk)

Don't miss any news – follow us on Facebook, LinkedIn or Mastodon.

This article was originally published in German. It was translated with technical assistance and editorially reviewed before publication.