Microsoft 365 Alert – Service Degradation – Exchange Online – Users aren’t receiving or receive delayed automatic acceptance email for meetings scheduled with conference rooms – RESOLVED

Announcements Habiba Tabasum

02/05/2024 15:11:00 PM

NHSmail Reference: INC42799167

Microsoft Reference: EX789261

Issue Status: RESOLVED

Issue Description: Users’ automatic acceptance email for meetings scheduled with conference rooms may be delayed or fail to send.

More info: This issue may affect some room resource mailboxes and it prevents users from receiving the automated email responses in a timely manner within any Exchange Online connection method

Final Update: 06/05/2024 13:04:00 PM – Microsoft successfully concluded the deployment of their fix and processed the lingering tasks from backlogged data, and confirmed following a monitoring period that impact has been remediated.

Scope of impact: This issue may affect some users expecting to receive automatic acceptance email responses for meetings scheduled with some conference rooms.

Root cause: A subset of Exchange Online mailbox infrastructure dropped below our manageable service performance thresholds, resulting in impact.

Next steps: Microsoft are reviewing their code for improved performance and potential automated recovery options to reduce or avoid similar impact in the future.