Microsoft 365 Alert – Service Degradation – Exchange Online – Users may be unable to delete a user from the contact list within Outlook on the web – ONGOING

Announcements Arpan Das

18/11/2025 08:57:00 AM

NHSmail Reference: INC46684544

Microsoft Reference: EX1183677

Issue Status: ONGOING

Issue Description: Users may be unable to delete a user from the contact list within Outlook on the web.

Current Update: 09/12/2025 09:18:00 PM – The process to test and validate the fix in Microsoft’s internal environment is taking longer than expected. They anticipate completing this process by the next scheduled update. Once the fix has been successfully validated, they will proceed with deployment.

Scope of impact: Users attempting to remove users from the contact list within Outlook on the web may be impacted.

Next update by: Monday, December 15, 2025, at 11:00 AM UTC