Final Status: Engineers rebooted the affected portion of messaging infrastructure to remediate impact.
User Experience: Affected users may have been unable to view or post messages to the Yammer service.
Customer Impact: Customer impact appears to have been limited.
Incident Start Time: Friday, May 1, 2015, at 2:50 AM UTC
Incident End Time: Friday, May 1, 2015, at 3:21 AM UTC
Preliminary Root Cause: A portion of the messaging infrastructure that is responsible for responding to end-user requests had become unresponsive. The underlying root cause 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.