18/07/2022 15:48:00 PM (BST)
Issue Reported : 18/07/2022 03:20:00 PM UTC
Microsoft Reference : EX401976
Issue Status : RESOLVED
Issue Description : Unable to access Exchange Online
More info : Users able to access Exchange Online may experience degraded functionality with multiple Exchange Online features.
Scope of impact :This issue could have impacted any user attempting to access Exchange Online and were located in the North-Eastern United States and surrounding geographical regions.
Final Update : 18/07/2022 18:33:00 PM – After a period of extended monitoring, Microsoft have confirmed that the issue is resolved.
Root cause : A network router was performing below acceptable thresholds, resulting in impact.
Next steps : Microsoft are analyzing the affected network router to identity why the issue occurred and develop plans to prevent the issue from occurring again.