Outage in Commvault

Exchange Mailbox Intermittent Issues

Resolved Minor

December 10, 2025 - Started 3 months ago - Lasted 8 days
Official incident page

Incident Report

We are currently experiencing intermittent issues originating from Microsoft’s side that are impacting certain Exchange mailboxes. Affected users may encounter the following error message in their mailbox status: “No valid Azure app found. Please run check readiness.” Our team is actively engaging with Microsoft to investigate and resolve the matter. We will provide the next update as soon as additional information becomes available. We appreciate your understanding and cooperation during this time.

Components affected

Commvault East US2 Commvault France Central Commvault Canada Central

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Latest Updates ( sorted recent to last )

RESOLVED 3 months ago - at 12/19/2025 12:05AM

This incident has been resolved.

INVESTIGATING 3 months ago - at 12/10/2025 02:14PM

We are currently experiencing intermittent issues originating from Microsoft’s side that are impacting certain Exchange mailboxes. Affected users may encounter the following error message in their mailbox status: “No valid Azure app found. Please run check readiness.”
Our team is actively engaging with Microsoft to investigate and resolve the matter. We will provide the next update as soon as additional information becomes available.
We appreciate your understanding and cooperation during this time.

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