User Experience: Affected users may have been unable to sign in to Yammer.
Customer Impact: Customer impact appeared to be limited during this event.
Incident Start Time: Thursday, June 18, 2015, at 1:05 AM UTC
Incident End Time: Thursday, June 18, 2015, at 1:15 AM UTC
Preliminary Root Cause: A network device became temporarily degraded. The underlying root cause is still 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.