Advisory information Title: Some users may be intermittently unable to connect to the Exchange Online service ID: EX310897
Status Service Restored
Details Title: Some users may be intermittently unable to connect to the Exchange Online service
User Impact: Users may have been intermittently unable to connect to the Exchange Online service.
Final status: We've confirmed that our fix was successfully deployed to the affected infrastructure and determined via telemetry that this issue is resolved.
Scope of impact: Any user may have been intermittently impacted, however instances of impact for this specific issue were rare.
Start time: Friday, December 10, 2021, at 12:00 PM UTC End time: Monday, January 17, 2022, at 5:28 PM UTC
Root cause: A recent change to the caching infrastructure intended to improve the request fetching process in the service contained a code issue, causing impact.
Next steps: -We're reviewing our validation and update procedures to detect issues like this prior to deployment and prevent problems like this from occurring in the future.
This is the final update for the event.
Thank you, The Microsoft team
Posted Jan 18, 2022 - 06:45 CST
Identified
EX310897
anuary 10, 2022 12:22 PM Title: Some users may be intermittently unable to connect to the Exchange Online service
User Impact: Users may be intermittently unable to connect to the Exchange Online service.
Current status: We've completed the validation of the fix and are monitoring it as it progresses through the affected infrastructure. Most users should see relief.
Scope of impact: Any user may be intermittently impacted, however instances of impact for this specific issue are rare.
Start time: Friday, December 10, 2021, 6:00 AM (12:00 PM UTC)
Estimated time to resolve: We expect the fix to complete deploying to all affected infrastructure by Monday, January 17, 2022, 12:30 PM (6:30 PM UTC) .
Root cause: A recent change to the caching infrastructure intended to improve the request fetching process in the service contains a code issue, causing impact.
Next update by: Monday, January 17, 2022, 12:30 PM (6:30 PM UTC)
Posted Jan 11, 2022 - 13:18 CST
Investigating
Exchange Online service alert
Advisory information Title: Some users may be intermittently unable to connect to the Exchange Online service ID: EX310897
Status Service Degradation
Details Title: Some users may be intermittently unable to connect to the Exchange Online service
User Impact: Users may be intermittently unable to connect to the Exchange Online service.
Current status: We've completed the validation of the fix and are monitoring it as it progresses through the affected infrastructure. Most users should see relief.
Scope of impact: Any user may be intermittently impacted, however instances of impact for this specific issue are rare.
Start time: Friday, December 10, 2021, at 12:00 PM UTC
Estimated time to resolve: We expect the fix to complete deploying to all affected infrastructure by Monday, January 17, 2022, at 6:30 PM UTC.
Root cause: A recent change to the caching infrastructure intended to improve the request fetching process in the service contains a code issue, causing impact.
Next update by: Monday, January 17, 2022, at 6:30 PM UTC