Final Status: Engineers successfully removed an update throughout the affected infrastructure to mitigate impact.
User Experience: The affected users were unable to upload files to Yammer.com. Affected users should refresh their internet browser session to fully remediate impact.
Customer Impact: Yammer functionality outside of uploads was unaffected. Impact was limited throughout the duration of the incident.
Incident Start Time: Tuesday, April 14, 2015, at 4:30 PM UTC
Incident End Time: Tuesday, April 14, 2015, at 7:45 PM UTC
Preliminary Root Cause: A recent deployment intended to improve Yammer stability was unexpectedly preventing users from uploading files to Yammer.com.
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 the infrastructure update pre-deployment process as a planned update unexpectedly caused impact.
Please consider this service notification the final update on the event.