![](\"https:\/\/borncity.com\/blog\/wp-content\/uploads\/2015\/01\/Stop.jpg\")
Am 27.4.2021 gab es wohl weltweit einen Ausfall von Microsoft Teams. Millionen Team-Nutzer waren pl\u00f6tzlich ganz alleine auf sich selbst gestellt und mussten per E-Mail oder Telefon kommunizieren. Kleiner R\u00fcckblick auf das Desaster.<\/p>\nAm 27.4.2021 gab es wohl weltweit einen Ausfall von Microsoft Teams. Millionen Team-Nutzer waren pl\u00f6tzlich ganz alleine auf sich selbst gestellt und mussten per E-Mail oder Telefon kommunizieren. Kleiner R\u00fcckblick auf das Desaster.<\/p>\n
<\/p>\n
Da ging wohl nix mehr bei Nutzern von Microsoft Teams. Auf allest\u00f6rungen.de<\/a> lie\u00df sich diese St\u00f6rung (siehe folgendes Bild) gut beobachten. Begann am 27. April 2021 um ca. 10:00 Uhr und war erst gegen 16:00 Uhr deutscher Zeit behoben.<\/p>\n Die meisten Leute konnten sich nicht an Teams anmelden oder hatten Verbindungsprobleme mit den Microsoft Teams Servern. Knorke fand ich die Reaktionen der Leute auf Twitter. Die britische Nationalbibliothek meinte, es g\u00e4be immer noch Pergament zum Lesen:<\/p>\n Zeigt, wie abh\u00e4ngig die Welt von solchen Dingen wie MS Teams geworden zu sein glaubt. Die Kollegen von Bleeping Computer hatten den Ausfall zeitnah in diesem<\/a> Beitrag dokumentiert. Sie schrieben, dass ein weltweiter Ausfall von Microsoft Teams Benutzer daran hindert, sich bei ihren Konten anzumelden, und hindert bereits angemeldete Benutzer daran, Nachrichten zu senden und zu empfangen. Als die St\u00f6rung auftrat, begann Microsoft die Telemetriedaten zu untersuchen, um die Probleme zu identifizieren.<\/p>\n Das Social Media Team von Microsoft 265 Status best\u00e4tigte auf Twitter recht schnell diesen Ausfall (siehe obigen Tweet<\/a>). Nach drei Stunden teilte Microsoft mit, dass der Dienst wieder wie erwartet laufe. Die Kollegen bei heise hatten das gestern hier<\/a> aufgespie\u00dft und Blog-Leser Andreas P. hat mir gestern Abend diese Informationen zukommen lassen.<\/p>\n Published Time: 27.04.2021 15:00:41Ich hatte es gestern schon mitbekommen, aber keinen Drive, dieses traurige Vorkommnis sofort hier zu kommentieren. Daher ein kurzer Nachtrag. Der nachfolgende Tweet<\/a> spiegelt das Ganze wieder.<\/p>\n
![\"MS](\"https:\/\/i.imgur.com\/3UfpP0S.png\" "\\"MS")
<\/a><\/p>\n![\"MS](\"https:\/\/i.imgur.com\/0wvZv3w.png\" "\\"MS")
\nMS Teams St\u00f6rung 27.4.2021<\/p>\n![\"MS](\"https:\/\/i.imgur.com\/Lh2cRax.png\" "\\"MS")
<\/a><\/p>\n![\"MS](\"https:\/\/i.imgur.com\/EmOlUyk.png\" "\\"MS")
<\/a><\/p>\n
\nTitle: Can't access Teams
\nUser Impact: Users may have been unable to access Microsoft Teams through both the web and desktop client.
\nMore info: Users able to access the Microsoft Teams may have experienced degraded performance with multiple features. These included but were not limited to:
\n– Can't send or receive messages
\n– Can't join meetings
\n– Some channels may have not appeared
\n– Can't join channels
\n– Can't join chats
\nUsers still experiencing impact were encouraged to restart their client to expedite recovery.
\nFinal status: We've monitored the environment and confirmed that the service is performing as expected. If a user is still experiencing impact, they need to restart their clients to recover. Some users may see 'Int' text on top of their profile pictures and a restart of the client should also remove this new text.
\nScope of impact: Any user could have been affected by this issue.
\nStart time: Tuesday, April 27, 2021, at 9:58 AM UTC
\nEnd time: Tuesday, April 27, 2021, at 12:05 PM UTC
\nPreliminary root cause: A recent configuration change resulted in specific feature settings to include an incorrect value, resulting in impact to the service. We're still investigating the specific details, and we'll provide more details in the Post Incident Report (PIR).
\nNext steps:
\n– We're reviewing the details on the configuration file update to identify the source of the issue.
\nWe'll publish a post-incident report within five business days.
\nPublished Time: 27.04.2021 14:14:04
\nTitle: Can't access Teams
\nUser Impact: Users may be unable to access Microsoft Teams through both the web and desktop client.
\nMore info: Users able to access the Microsoft Teams may experience degraded performance with multiple features. These include but are not limited to:
\n– Can't send or receive messages
\n– Can't join meetings
\n– Some channels may not appear
\n– Can't join channels
\n– Can't join chats
\nCurrent status: We've identified the root cause as a recent configuration change. We've reverted the change and are seeing signs of recovery. Users still experiencing impact are encouraged to restart their client to expedite recovery.
\nScope of impact: Any user could be affected by this issue.
\nNext update by: Tuesday, April 27, 2021, at 2:00 PM UTC
\nPublished Time: 27.04.2021 13:39:34
\nTitle: Degraded chat functionality
\nUser Impact: Users may experience degraded chat functionality.
\nMore info: Impacted functionality includes, but is not limited to:
\n– Can't send or receive messages
\n– Some Channels may not appear
\n– Can't join channels
\n– Can't join chats
\nCurrent status: We've identified errors within the chat service and are investigating these further to identify the source of the issue.
\nScope of impact: Initial indications suggest that any user could be affected by this issue.
\nNext update by: Tuesday, April 27, 2021, at 1:00 PM UTC
\nPublished Time: 27.04.2021 12:47:42
\nTitle: Can't access Teams
\nUser Impact: Users may be unable to access Microsoft Teams.
\nMore info: Users able to access Microsoft Teams may experience degraded performance with multiple features.
\nCurrent status: We're analyzing system telemetry to isolate the source for the issue. In parallel, we're reviewing recent changes made to the service as a potential root cause.
\nScope of impact: Initial indications suggest that any user could be affected by this issue.
\nNext update by: Tuesday, April 27, 2021, at 12:30 PM UTC
\nPublished Time: 27.04.2021 12:26:47
\nTitle: Can't access Teams
\nUser Impact: Users may be unable to access Microsoft Teams.
\nMore info: Users able to access Microsoft Teams may experience degraded performance with multiple features.
\nCurrent status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 30 minutes.<\/p><\/blockquote>\n