Exchange Mailbox Intermittent Issues

Incident Report for m117

Investigating

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.

Posted Dec 10, 2025 - 14:12 UTC

This incident affects: Office 365 (South Africa North).