Couple of the Spark users received error mesage upon login "[9:49 AM] Broadcast: You are using an invalid client, and therefore will be disconnected. Please ask your system administrator for client choices.
Your connection was closed due to an error." Spark client disconnects right after that and keep reconnecting, with the error message repeating. The Spark client shows “You have lost your connection to the server due to policy-violation.” The rest of the users are not effected. by this problem at all.
Has anyone seen this problem before and what may have caused it?