Microsoft 365 Alert – Service Degradation – Exchange Online – Some users may be unable to receive or sync on-premises email messages on the Outlook mobile app – RESOLVED

Announcements Arpan Das

28/10/2024 09:06:00 AM

NHSmail Reference: INC46507383

Microsoft Reference: EX918851

Issue Status: RESOLVED

Issue Description: Users may be unable to receive or sync on-premises email messages on the Outlook mobile app.

Final Update: 01/11/2024 10:46:00 AM – The deployment has successfully completed and has resolved impact.

Scope of impact: Impact may occur for some users attempting to receive or sync on-premises email messages on the Outlook mobile app.

Root cause: A recent change to the Mailbox Replication Service (MRS) intended to enhance logging has resulted in sync issues for on-premises email messages on the Outlook mobile app.

Next steps: Microsoft are reviewing their update procedures to better identify similar issues during our development and testing cycles.