Title: Some users may see search latency within the Exchange Online service
User impact: Users may have seen search latency within the Exchange Online service.
Final status: We’ve confirmed, through monitoring our deployment telemetry, that the fix successfully saturated throughout affected environments and resolved impact for all users.
Scope of impact: This event may have impacted any user running searches with more than 200 properties in their search schemas.
Start time: Monday, October 30, 2023, at 3:00 PM UTC
End time: Monday, November 13, 2023, at 12:00 AM UTC
Root cause: A recent service update, intended to enhance conversational matching in Exchange Online searches, contained a code issue that resulted in processing inefficiencies for file searches, leading to impact.
Next steps:
– We’re assessing the methodology by which our service updates are validated so we can prevent the introduction of similarly impacting code issues in future deployments.
This is the final update for the event.
