Microsoft 365 Experiences Major Outage Affecting Outlook and Multiple Services
- Published
- Source
- ITmedia.co.jp
On November 12, 2023, Microsoft faced a significant outage in its cloud service, Microsoft 365, impacting users' access to the Exchange Online email service. This disruption affected various platforms, including the web version of Outlook, desktop, and mobile applications, as well as connections via MAPI, ActiveSync, and REST.
The outage is critical as it not only hindered email access but also impacted other services such as Microsoft Teams, SharePoint Online, and Microsoft Defender XDR. Microsoft has acknowledged the issue, stating that it was caused by unexpected server failures rather than increased traffic, leading to a concentration of load on the remaining infrastructure.
Microsoft is actively working on recovery, having paused all deployments and redistributed connection traffic globally. The company plans to implement an automatic recovery mechanism for unresponsive servers. The next update regarding the situation is expected by November 13, 2023, at 7:30 AM JST.
Original report
[ITmedia News] Microsoft 365で大規模障害 「Outlook」でメールにアクセスできず、「Teams」など複数サービスに影響
ITmedia.co.jpThis briefing is an independently written summary based on publicly available reporting and is provided for industry information and news discovery. The original report and source publication are credited and linked where applicable. RobotToday does not claim ownership of third-party source material.
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