YA22820 | Service Restored| Unable to access the Yammer service| Wednesday, May 20, 2015, at 11:10 PM UTC

Final Status: Engineers corrected a network misconfiguration to mitigate impact.

User Experience: Affected users may have been unable to access the Yammer service.

Customer Impact: Customer impact appears to have been limited.

Incident Start Time: Wednesday, May 20, 2015, at 9:55 PM UTC

Incident End Time: Wednesday, May 20, 2015, at 10:32 PM UTC

Preliminary Root Cause: A hardware capacity appeared to have a network misconfiguration. The underlying root cause of this issue is under investigation.

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: Identify the underlying root cause and develop a solution to prevent reoccurrences.

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

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