From iDRAC version 6.00.02.00 onwards iDRAC only support virtual console using eHTML5. Java, ActiveX, and HTML5 are no longer supported. You can refer below link with details [URL] 
I have been using a small cli script assembled from the .jar files listed in the .jnlp file you get when you start the java console. It's pretty basic, I have one for idrac6 and one for idrac7/8/9. I can simply type idrac.cmd to bring up the console, without opening a browser and without dealing with pesky legacy java plugin issues. It's been working very well for a long time and I have shared it with my team.  On iDRAC 9 we've had to disable KVM encryption for this to work (I guess that's where the 'e' in eHTML5 comes from?). But now in v6.00.02.00 they took that option away, from [URL] : I assume it is the actual launching of java/activex plugins from the browser which is (understandably) no longer supported, which I don't need or want since I use a direct java launcher instead. I only need the protocol support. Hopefully the encryption selection can be brought back so we can continue using this KVM cli tool. Br, Ådne
iDRAC9 v6.00.02.00 -- eHTML5 only, please bring back HTML5