Final Status: Engineers disabled a recently added Yammer feature and performed tests to validate remediation.
User Experience: The affected users may have been intermittently unable to access Yammer.com. Additionally, Yammer.com site performance may have been degraded.
Customer Impact: Impact was limited throughout the duration of the incident.
Incident Start Time: Wednesday, May 13, 2015, at 2:35 PM UTC
Incident End Time: Wednesday, May 13, 2015, at 3:00 PM UTC
Preliminary Root Cause: A recently enabled feature intended to enhance Yammer functionality unexpectedly caused Yammer.com to experience various performance issues.
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 procedures for adding additional features as service impact was not identified during the testing phase prior to deployment.
Please consider this service notification the final update on the event.