Microsoft 365 Alert – Service Degradation – Microsoft Viva – Users may be unable to send posts in Microsoft Viva Engage – RESOLVED

Announcements Arpan Das

24/02/2026 8:40:00 AM

NHSmail Reference: INC46757070

Microsoft Reference: MV1237654

Issue Status: RESOLVED

Issue Description: Users may have been unable to send posts in Viva Engage.

Current Update: 24/02/2026 9:01:00 AM – Microsoft has determined that routine infrastructure maintenance prevented the affected infrastructure from processing requests to send posts in Viva Engage, which resulted in impact. They disabled this maintenance and confirmed using their internal telemetry data that impact has been remediated.

Scope of impact: Any user that attempted to send a post in Viva Engage may have been impacted.

Root cause: Routine infrastructure maintenance prevented the affected infrastructure from processing requests to send posts in Viva Engage, which resulted in impact.

Next Steps: Microsoft are reviewing and improving their routine infrastructure maintenance procedures to prevent similar impact from occurring again in the future.