Microsoft 365 Alert – Service Degradation – Microsoft 365 Defender – Users may see delays loading the Submissions and Quarantine sections in Microsoft Defender for Office 365 – RESOLVED

30/03/2023 09:40:00 AM (GMT)

NHSmail Reference : INC35065941

Microsoft Reference : DZ534798

Issue Status : RESOLVED

Issue Description : Users may see delays loading the Submissions and Quarantine sections in Microsoft Defender for Office 365.

More Information :  Users may specifically see delays with the following subsections on the Submissions page:
-Emails
-Email attachments
-URLs
-User Reported

Final Update : 04/04/2023 08:58:00 AM – Microsoft have confirmed that their process of manually clearing the impacting False Positive (FP) alerts successfully resolved the impact for affected users.

Scope of impact : This issue may potentially affect any user attempting to load the Submissions section in Microsoft Defender for Office 365.

Root cause: An unexpected high number of False Positive (FP) alerts to the service has resulted in delays loading the Submissions and Quarantine sections in Microsoft Defender for Office 365.

Next steps: Microsoft are continuing to investigate the impacting alerts to gain further insight into the source of the issue and prevent similar impact in the future