Outage in Microsoft 365
Some users may be unable to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop
Resolved Minor
August 17, 2026 - Started about 1 month ago
- Lasted 4 days
Incident Report
Summary AI Generated
Some users were unable to search for content across SharePoint Online, OneDrive, Outlook on the web, and Outlook desktop for approximately 87 hours beginning August 14, 2026. The root cause was a recent deployment that introduced a resource utilization inefficiency, causing increased service restarts within affected infrastructure. Microsoft developed and deployed a targeted fix to reduce resource pressure and restore search functionality.
Title: Some users may be unable to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop
User impact: Users may be unable to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop.
Current status: We're reviewing service monitoring telemetry and support provided information to determine our next troubleshooting steps.
Scope of impact: Impact is specific to some users served through the affected infrastructure who are attempting to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop.
Next update by: Monday, August 17, 2026, at 3:00 PM UTC
User impact: Users may be unable to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop.
Current status: We're reviewing service monitoring telemetry and support provided information to determine our next troubleshooting steps.
Scope of impact: Impact is specific to some users served through the affected infrastructure who are attempting to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop.
Next update by: Monday, August 17, 2026, at 3:00 PM UTC
Components affected
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Latest Updates ( sorted recent to last )
about 1 month ago - at 08/18/2026 03:41AM
Title: Some users may be unable to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop
User impact: Users may be unable to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop.
Current status: Our investigation identified that a recent deployment introduced a resource utilization inefficiency issue, leading to impact. We've developed and are deploying a fix to reduce the resource pressure and restore service. We're monitoring as this progresses to identify a completion timeline.
Scope of impact: Impact is specific to some users served through the affected infrastructure who are attempting to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop. This section may be updated as our investigation continues.
Start time: Friday, August 14, 2026, at 5:00 AM UTC
Root cause: A recent deployment introduced a resource utilization inefficiency issue, leading to impact.
Next update by: Friday, August 21, 2026, at 4:00 AM UTC
about 1 month ago - at 08/17/2026 02:15PM
Title: Some users may be unable to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop
User impact: Users may be unable to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop.
Current status: We're analyzing service telemetry and reviewing recent service changes to determine the cause of impact. We've identified indicators of increased service restarts within a portion of the affected infrastructure, which may be contributing to the issue. We're validating potential remediation options while continuing our investigation into the root cause.
Scope of impact: Impact is specific to some users served through the affected infrastructure who are attempting to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop.
Next update by: Tuesday, August 18, 2026, at 4:00 AM UTC
about 1 month ago - at 08/17/2026 12:49PM
Title: Some users may be unable to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop
User impact: Users may be unable to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop.
Current status: We're reviewing service monitoring telemetry and support provided information to determine our next troubleshooting steps.
Scope of impact: Impact is specific to some users served through the affected infrastructure who are attempting to search for content in SharePoint Online, OneDrive, Outlook on the web, or Outlook desktop.
Next update by: Monday, August 17, 2026, at 3:00 PM UTC
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