Groov Log-in Issue

Dear All

  Here I am facing logging problem in some PC's,while logging its giving the message like "Operation Failed retrying" , i tried with different users also, but still same issue,  help me to come out this situation. <img src="/uploads/db0433/original/1X/017ba43a19e31cd1e30adacd3a7451be41f9aa56.jpg" width="690" height="388"><br/>