Microsoft outrages


Microsoft 365 experienced a significant outage on November 25, 2024, affecting a wide range of its services globally. Here are the key details:

Cause of the Outage

The outage was attributed to a "recent change" made by Microsoft, which the company quickly identified and began rolling back to restore services



Affected Services

The outage impacted several critical Microsoft 365 services, including:

Exchange Online

Microsoft Teams


Outlook (both web and desktop versions)


SharePoint Online


OneDrive


Purview


Copilot


Skype



Timeline of the Outage

Reports of issues began surfacing around 4 AM ET, but complaints spiked significantly by 8 AM ET as users started their workday.

By midday, over 5,300 complaints were logged on DownDetector, with most users reporting problems with Exchange and Outlook



Recovery Efforts

Microsoft acknowledged the issue and started deploying a fix, which involved rolling back the problematic update and performing manual restarts on affected machines.

U

By noon ET, the company reported that the fix had restored service to approximately 98% of the affected environments. However, some users continued to experience delays in accessing Exchange Online and Teams calendars



Ongoing Issues

Despite the significant progress in restoring services, some users still reported issues with Outlook on the web and other services late into the day.

Microsoft continued targeted restarts and monitoring to ensure full restoration, estimating that most services would be fully restored by the following day, November 26







.


User Impact

The outage caused significant disruptions to business operations worldwide, with users experiencing difficulties in accessing emails, calendars, and other essential Microsoft 365 features. While some users found the unexpected downtime ahead of the Thanksgiving holiday weekend to be a minor respite, many others expressed frustration over the interruption to their critical workflows







.

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