Microsoft 365 Alert – Service Degradation – Exchange Online – Some users may be unable to send or receive email messages in Exchange Online using Outlook on the web or desktop client – NEW

03/12/2024 08:39:00 AM

NHSmail Reference: INC47232663

Microsoft Reference: EX946693

Issue Status: OPEN

Issue Description: Some users may be unable to send or receive email messages in Exchange Online using Outlook on the web or desktop client

Current Update: 03/12/2024 08:44:00 AM – Microsoft are preparing to deploy their fix and anticipate that this process should be underway by their next scheduled communications update. They will provide a precise remediation timeline once available.

Scope of impact: Some users who are served through the affected infrastructure may be unable to send or receive email messages in Exchange Online using Outlook on the web or desktop client.

Root cause: A table responsible for updating indexes on calls to the database was deleted, as intended, by an internal process. However, the corresponding metadata to reflect that deletion did not update correctly due to an unexpected service error that occurred on a subset of infrastructure, which resulted in the impact.

Next update by: Wednesday, December 4, 2024, at 7:30 PM UTC