Title: Users accessing their Outlook calendar using some connection methods may see items with incorrect dates and times
User impact: Users accessing their Outlook calendar using some connection methods may have seen items with incorrect dates and times.
More info: This issue specifically affected users that were accessing their Outlook calendar from Outlook for Mac or the Outlook iOS or Android app. Users viewing their calendar through other connection methods were unaffected.
Final status: We’ve confirmed that the deployment of the fix has completed, and the impact is remediated.
Scope of impact: Any user accessing their Outlook calendar through Outlook for Mac or the Outlook iOS or Android app may have been impacted.
Start time: Wednesday, February 14, 2024, at 8:00 AM UTC
End time: Monday, March 18, 2024, at 5:00 PM UTC
Root cause: A recent update to the data pathways responsible for syncing calendar items introduced a code issue that was preventing all elements of calendar items from syncing as expected within the impacted connection methods and resulted in impact.
Next steps:
– We’re further reviewing the recent update to understand how the code issue was introduced, and to understand what prevented it from being detected in our update testing and validation procedures, which will allow us to prevent similar issues in future updates.
This is the final update for the event.
