Using Control Panel Java applet, modified all settings to the least restrictive possible. Logged off and closed browser window to iDRAC. Downloaded a new viewer.jnlp file. In Windows File Exporer > Properties > Unblock. The C:\Program Files\Java\jre7\lib\security>notepad java.security contents is "#jdk.tls.disabledAlgorithms=SSLv3" (commented out ALL disablement).