Let’s made it clear: get this plugin working on OSX can be a huge PITA. I’ve read about it on forums, blogs, even on the VMware KB, without solving the issue (and often with arguable workarounds) I’ve solved it after I realized that the issue was in the installation of the CA into the Firefox Trust Store, so I’ll try to explain what I’ve done. My Setup $ uname -a Darwin turing 17.