Microsoft 365 Alert – Service Degradation – Exchange Online- Users are unable to send email to contact lists from specific shared mailboxes in Outlook on the web – RESOLVED

28/12/2022 14:08:00 PM (GMT)

NHSmail Reference : INC33518314/INC33283115

Microsoft Reference : EX488107

Issue Status : RESOLVED

Issue Description : Users are unable to send email to contact lists from specific shared mailboxes in Outlook on the web.

More Information : Affected users see errors such as, “Couldn”t send the following message,” and, “This message can”t be saved because it no longer exists.”

Admins may see the following error in network trace logs: “The specified object was not found in the store.”

While Microsoft is working to remediate impact, affected users can manually add addresses to impacted personal contact lists as a workaround.

Final Update : 10/01/2023 12:16:00 PM– Microsoft has received confirmation from affected users that the issue has been resolved.

Scope of impact : Your organization is affected by this event, and any user attempting to send email to contact lists from specific shared mailboxes in Outlook on the web is impacted.

Next steps : Microsoft is reviewing their update procedures to better identify similar issues during our development and testing cycles.