Microsoft 365 Alert – Service Degradation – Exchange Online – Some users may be intermittently unable to access Exchange Online through Exchange ActiveSync (EAS) – RESOLVED

Announcements Sourav Nandi

08/07/2024 08:50:00 AM

NHSmail Reference: INC44124378

Microsoft Reference: EX808712

Issue Status: RESOLVED

Issue Description: Some users may be intermittently unable to access Exchange Online through Exchange ActiveSync (EAS).

More info: Users may have been intermittently unable to access the Exchange Online service through EAS.

Final Update: 08/07/2024 08:50:00 AM – Microsoft have monitored the service health telemetry and have validated that the deployment is complete and has fully alleviated impact.

Scope of impact: This issue may have affected any user attempting to access the Exchange Online service through connection methods leveraging EAS, although it”s unlikely that all users were actively impacted at once due to the intermittent nature of the event.

Root cause: A recent change intended to provide a fix for an unrelated issue introduced a configuration issue that intermittently prevented users from accessing Exchange Online using EAS.

Next steps: Microsoft are analyzing the process for releasing changes in order to avoid impact such as this in the future.