HC is not showing disk/bandwidth usage graph

Question: HC is not showing disk/bandwidth usage graph. 

If you  go to Reports :: Disk Usage or Bandwidth Usage :: Usage Graph, you may find a broken link showing no graph. 

To fix this issue access the web server machine and go to HC installation folder path: 

X:\program files\advanced communications\HostingController There you will find a folder "Temp". Give Everyone user full permission on it. 

Now graph will start displaying in the panel