Maestro Labs incident
Office add-in disappeared from Microsoft Marketplace and the in-product Outlook add-ins store.
Critical Vendor's status page →
Resolved after 1 day 12 hours, affecting Outlook Add-In, on March 19, 2026.
Microsoft resolved the issue and the Add-In appears in the Marketplace again
Affected components
Outlook Add-In
Update timeline
- investigating Mar 19, 2026, 07:47 AM UTC
The MailMaestro Add-in disappeared from the Outlook Ribbon and the Microsoft Marketplace. The store listing is not available and the Add-In can't be used right now
- investigating Mar 19, 2026, 07:48 AM UTC
We are continuing to investigate this issue.
- investigating Mar 20, 2026, 08:39 PM UTC
Microsoft resolved the issue and the Add-In appears in the Marketplace again
- resolved Mar 20, 2026, 08:41 PM UTC
This incident has been resolved.
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