I recently installed a new Archer AX 6000.  I encountered a time wasting glitch during the setup. When I would get to the last item on the GUI and/or set-up program instructions, it would say that the set-up had failed, check your connections, etc. After several attempts, I accidently discovered something. The AX6000 was actually set up and working OK. It was just this glitch in the software. It was saying that the installation had failed when in reality it had not failed. I am passing this on to others that may have encounterd the same problem. Be sure to check if your router is working before you start trouble shooting the problem.