Final Status: Engineers added more capacity to allow the processing of messages, which has remediated the issue.
User Experience: Affected users may have experienced message posting delays. All other aspects of Yammer were functioning normally.
Customer Impact: Customer impact appeared to be limited during this incident.
Incident Start Time: Thursday, April 9, 2015, at 9:17 PM UTC
Incident End Time: Thursday, April 9, 2015, at 11:45 PM UTC
Preliminary Root Cause: A message queue build up had occurred due to a degraded process.
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 capacity expansion procedures as an automated process did not provision new infrastructure as expected.
Please consider this service notification the final update on the event.