Erik B. Andersen

You gave very few details, so I'm having to guess, but it sounds like webvirtmgr can't connect to your hypervisor. What kind of connection do you have to the hypervisor?...

toby11, does the NoVNC console view connect at first and then disconnect after about 20 seconds? Or just never connect at all? Can you take a screenshot of some of...

That looks like something you would get when you are able to sign in to webvirtmgr, but your connection to the hypervisor host has failed. How are you connected to...