19/08/2022 10:15:00 AM (BST)
Issue Reported : 10/08/2022 13:00:00 PM BST
NHSMail Reference : INC31167194
Microsoft Reference : EX415027
Issue Status : RESOLVED
Issue Description : Admins were unable to access the classic Exchange admin center and received a 500 error.
More Info : If available to your organization, admins could’ve utilized the modern experience of the Exchange admin center to bypass impact.
Scope of impact : Some admins attempting to access the classic Exchange admin center were impacted.
Final Update : 25/08/2022 09:03:00 AM – Deployment of the fix is complete, and Microsoft has confirmed through telemetry that the impact was resolved.
Root cause : A recent service update, intended to remove portions of code that were utilized by a deprecated service, is instead resulting in failures when attempting to load the classic Exchange admin center.
Next steps : Microsoft will continue to review their code update testing and validation processes to find ways to avoid repeats of similar impact in the future.