Resolved: Known Issue impacting Yammer
An issue impacting Yammer has been brought to the attention of the IT Service Desk. Currently this issue is causing slowness and loading errors with Yammer. Enterprise IT staff is notifying Microsoft and investigating the issue.
The IT Service Desk will continue to post updates to this alert as more information becomes available.
More information: Resolved: Known Issue impacting Yammer
Story added 23. August 2017, content source with full text you can find at link above.