Details
Title: Any user or admin may experience various issues intermittently when using the service
User Impact: Users or admins may have experienced various issues intermittently when using the service.
More info: The following entails the affected impact scenarios:
- Admins may have experienced intermittent issues when attempting to review or export logging results from the Exchange admin audit log.
- Users may have experienced intermittent issues when sending or receiving emails via any connection method. Affected users may have also seen the following error message: "This message could not be sent. Your server administrator had limited the number of items you could open simultaneously."
Users and admins who encounter these issues may have had to re-attempt these actions to complete the process.
Final status: We confirmed that the deployment has complete and validated via telemetry that the issue has been resolved.
Scope of impact: This issue could have potentially affected any of your users intermittently when attempting to send or receive emails, or admins attempting to review or export logging results from the Exchange admin audit log.
Start time: Friday, July 17, 2020, at 12:00 PM UTC
End time: Tuesday, August 25, 2020, at 8:30 PM UTC
Root cause: A recent service update introduced a code issue that was causing an unexpected increase in resource consumption on our infrastructure, resulting in impact.
Next steps:
- We're reviewing our service update procedures to determine why a code issue was introduced and avoid similar impact in the future.
This is the final update for the event.
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