Microsoft 365 Alert – Service Degradation – Microsoft 365 suite – Meeting room mailboxes and conference room slots are showing incorrect meeting times – RESOLVED

Announcements Sourav Nandi

24/07/2023 08:55:00 AM (GMT)

NHSmail Reference : INC37157133

Microsoft Reference : MO650595

Issue Status : RESOLVED

Issue Description : Meeting room mailboxes and conference room slots are showing incorrect meeting times.

More info : Impact is specific to any user who is scheduling meetings with users located in Central Mexico time zone. The time is appearing as UTC-5:00, when it should be reflected as UTC-6:00.

Final Update : 25/07/2023 08:53:00 AM – The deployment of the targeted patch for the impacted OS versions is complete, and Microsoft have monitored service health telemetry to confirm that this action has corrected the affected meeting times and impact is remediated.

Scope of impact : Users who are scheduling meetings with other users located in Central Mexico time zone are impacted.

Root cause : A recent deployment contained a patch that wasn’t targeted to a couple Operating Systems (OS) versions, leading to impact.

Next steps : Microsoft are reviewing their service infrastructure deployment procedures pertaining to OS version compatibility to prevent similar impact in future updates.