Microsoft Alert: Service Degradation – Exchange Online – Admins can’t modify distribution groups in Outlook on the web, the classic Exchange admin center (EAC), or PowerShell – ONGOING

21-07-2021 09:52:10 AM (BST)

Issue Reported: 20/07/2021 8:51 PM

Microsoft Reference : EX271779

Issue Status: ONGOING

Issue Description: Admins are unable to modify some distribution groups in Outlook on the web, the classic EAC, or PowerShell. Admins encountering this issue will receive an “outlook.office.com refused to connect” error.

Scope of impact: Any user hosted on the affected infrastructure may be impacted.

Current Update – 21/07/2021 09:52:00 AM: Microsoft review of the CAFE logs has revealed that data files are not deploying correctly, thus causing the search delays. Microsoft are rolling back a recent migration of traffic to its original infrastructure which is expected would mitigate impact. In parallel, Microsoft are continuing to investigate further mitigation options.

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