Update: Yammer Service Disruption
Microsoft is continuing to complete configuration updates to resolve the disruption with the Yammer service. In the meantime, all Yammer features are working as expected, with the exception of the Yammer Activity Stream Ticker. Once the configuration updates have completed, Microsoft will re-enable the Yammer Activity Stream Ticker to completely restore service.
The next status update by Microsoft is expected to be approximately 5AM, Friday, January 5, 2018.
More information: Update: Yammer Service Disruption
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