@Kevin_Z Hi Kevin, Thank you for the suggestion. I finally got the connection issue resolved. There are no special setting in the C4000. I was using my andriod phone's Chome and Firefox browsers to...

I am having problem of connecting my Tenda A9 range extender to the my new Archer C4000 router. The Tenda A9 used to work on the old router (TL-WDR3600) with no issue. Anyone has suggestions that I...