EX1063763: Exchange Online Service Health Incident

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365 Service Alert

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Apr 29, 2025, 9:38:33 AM4/29/25
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Some users may have encountered delays or failures searching in Outlook on the web.                                                                                                                                                                                                                         
Microsoft

Some users may have encountered delays or failures searching in Outlook on the web

ID: EX1063763

Issue type: Incident

Status

Service Restored

Impacted services

Exchange Online

Details

Title: Some users may have encountered delays or failures searching in Outlook on the web

User impact: Users may have encountered delays or failures searching in Outlook on the web.

More info: Users may have also seen issues searching in SharePoint Online.

Final status: We've confirmed after monitoring the telemetry for a period of time that impact has been fully remediated.

Scope of impact: Impact was specific to some users who were served through the affected infrastructure attempting to search.

Start time: Tuesday, April 8, 2025, at 6:00 AM UTC

End time: Tuesday, April 29, 2025, at 9:10 AM UTC

Root cause: Components of infrastructure, responsible for processing users search requests, were performing below acceptable performance thresholds and causing impact.

Next steps:

- We're analyzing performance data and trends on the affected infrastructure to help prevent this problem from happening again.

This is the final update for the event.

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