Resolved after 5 days 1 hour, affecting M365 - Asia Pacific and M365 - Europe, Middle East & Africa and 1 more, on October 9, 2026.
We have observed no further errors, and mailbox backup services have remained stable. This issue is now considered resolved. Please contact Veeam Support if you experience any further issues.
Affected components
Update timeline
- investigating Oct 09, 2026, 03:46 PM UTC
We have identified an increase in transient mailbox backup failures across multiple tenants. We have engaged Microsoft and our team is investigating the errors at this time.
- monitoring Oct 09, 2026, 11:35 PM UTC
Mailbox backup errors have decreased, and services are showing signs of recovery. We will continue to monitor service health throughout the weekend to ensure continued stability.
- resolved Oct 14, 2026, 04:52 PM UTC
We have observed no further errors, and mailbox backup services have remained stable. This issue is now considered resolved. Please contact Veeam Support if you experience any further issues.
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