I have already had a working Master - Slave Configuration on my Jenkins, but an update broke it so I had to reinstall it (didn\'t have a backup yet).
But now after reins
As of Jenkins version 2.176.3, there is option enabled when "Launch agent by connecting it to the master" which is same as "launch agent via java web start" once you enable the "Manage Jenkins => Configure Global Security => Agents => TCP port for inbound agents" as mentioned above. e.g. Fixed: 50000