YA35183 | Service Restored | The affected users were experiencing a blank “Files” and “Notes” tab when using Internet Explorer. | 12/15/2015 10:00 PM UTC

Final Status: Engineers have confirmed that disabling a recent update successfully mitigated impact.

User Impact: The affected users were experiencing a blank “Files” and “Notes” tab when using Internet Explorer.

Customer Impact: Analysis of incident scope indicated that a very limited number of customers and users appeared to be impacted. Engineers have received a few isolated customer reports of this issue.

Incident Start Time: Wednesday, December 16, 2015, at 6:30 PM UTC

Incident End Time: Wednesday, December 16, 2015, at 9:51 PM UTC

Preliminary Root Cause: A recent update intended to enhance Yammer functionality may have resulted in service impact.

Next Steps: The following is a list of known action item(s) associated with this incident. As part of the Office 365 problem management process, additional engineering actions may be identified to improve the overall service.
– Action: Review the infrastructure update process as an update caused impact to occur during a deployment.

Please consider this service notification the final update on the event.

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