Final Status: Engineers successfully implemented a configuration modification on a subset of Yammer servers to remediate impact.
User Experience: Affected users were unable to render file preview correctly within the user interface.
Customer Impact: A few customers reported that they experienced impact throughout the duration of the incident. The issue was specific filenames that contained spaces. Files with names without spaces rendered in file preview as expected.
Incident Start Time: Friday, February 6, 2015, at 12:00 PM UTC
Incident End Time: Thursday, February 12, 2015, at 5:55 AM UTC
Preliminary Root Cause: A configuring issue on a subset of Yammer servers prevented the file preview feature from functioning as expected. The underlying cause of the issue is still under investigation.
Next Steps: The following is a list of known action item(s) associated with this incident. As part of the problem management process, additional actions may be identified to improve the overall service.
– Action: Review the infrastructure update process to prevent reoccurrences of this scenario.