Microsoft 365 Alert – Service Degradation – Exchange Online – Potential issues accessing mailboxes via one or more connection methods – RESOLVED

Announcements Sharmista Mohanta

23/06/2026 08:52:00 AM

NHSmail Reference: INC46858984

Microsoft Reference: EX1401691

Issue Status: RESOLVED

Issue Description: Users may experience errors or failures when accessing their mailbox via one or more Exchange Online connection methods.

Final Update: 22/07/2026 08:51:00 AM –The investigation is complete and Microsoft has determined the service is healthy. A service incident didn’t actually occur.

This communication will expire in 24 hours.