Back at it this morning and, while I don't quite get what's happening, I consider this resolved. This morning I did the following: removed a prior install of Apache Zeppelin after I realized that after a reboot, it still responded to localhost:8080 confirmed it was indeed gone started up Virtual box and started the sandbox then zeppelin still responded to localhost:8080, which really confused me then tried localhost:9995, to which a different zeppelin page responded - so that was a good thing then, remembering something from a previous experience, I tried 127.0.0.1:8080 and then Ambari responded with its login page This is now the second time I have seen localhost and 127.0.0.1 be treated differently; one of these days I'll have to figure out why. But for now, I'm back in business and continuing the tutorial. Thanks everyone for their help! Cecil ... View more