Resolved
We've applied a mitigation to prevent this particular issue from recurring.
Monitoring
API integrations are no longer degraded
Identified
Offica Add-in checks are back to operational and were impacted between 17:02-17:15 UTC
Identified
Office Add-in checks are failing, the add-in will let emails send without checking, but with potentially increased latency
Live Syncing is failing to process emails and Defender via API is failing to check emails