Microsoft 365 Alert – Service Degradation – Exchange Online – Users’ auto-decline meeting settings for automatic replies may not be working in Exchange Online – RESOLVED

Announcements Shagufta Naaz

24/02/2026 8:40:00 AM

NHSmail Reference: INC46757124

Microsoft Reference: EX1237864

Issue Status: RESOLVED

Issue Description: Users’ auto-decline meeting settings for automatic replies may not be working in Exchange Online.

Final Update: 09/03/2026 8:18:00 AM– Microsoft has completed the deployment of our code fix and confirmed it has saturated throughout the affected environment, remediating impact for all users.

Scope of impact: Users with automatic replies set up to auto-decline meeting invites in Exchange Online may be impacted. This information may be updated as our investigation continues.

Root cause: A latent code issue triggered by a recent service configuration update is resulting in impact.

Next steps: Microsoft is reviewing our update testing and validation procedures to identify opportunities to better detect impact and prevent similar future occurrences.