Microsoft 365 Search Outage Hits Outlook, OneDrive and SharePoint

The Microsoft 365 search outage is affecting Outlook, SharePoint Online, and OneDrive, with some users unable to find content across the services. Microsoft has confirmed the incident and says a fix has already been deployed.

Microsoft recently dealt with a GitHub outage that affected several services, and now the company is investigating search problems across Microsoft 365.

Microsoft is tracking the latest incident as MO1456424 in the Microsoft 365 Admin Center.

Microsoft 365 search stops working across several services

According to Microsoft, affected users may have trouble searching for content in several Microsoft 365 products, including Outlook on the web, Outlook desktop, SharePoint Online, and OneDrive.

Microsoft classified MO1456424 as an incident, indicating that the problem has caused noticeable service disruption for affected customers.

The company has not disclosed which regions are experiencing the issue, and the problem only affects users connected to the impacted infrastructure.

A recent deployment caused the Microsoft 365 search outage

Microsoft traced the search problems to a recent deployment that introduced a resource utilization inefficiency.

The problem increased pressure on the infrastructure handling search requests. As resource usage climbed, users connected to the affected systems began experiencing problems when trying to search for emails, files, and other content.

Microsoft has not provided additional details about the deployment or explained exactly what component triggered the resource pressure.

Microsoft has already deployed a fix

Microsoft says it developed and deployed a remediation designed to reduce resource pressure and restore search functionality.

The company is working to bring search back to normal for affected Microsoft 365 users. Microsoft has not disclosed the specific regions or infrastructure affected by the incident.

The incident follows several other Microsoft developments. The company is removing WMIC from Windows 11 and is also warning Whiteboard users to migrate their content before the August 22 deadline.

Via BleepingComputer