R6400

I had tried all solutions you mentioned as I had done extensive research on internet.. In the end as I said the only thing that would work was only connect thru wifi with a naked router. Couldn't use ethernet connection to naked router....I try to run a secure setup so my default browser was highly configured that was why I tried browsers that I don't use... to no avail....in the end it was my default browser that connected to gui just with out internet/modem connected. Probably no one else well have identical problem but our discussion may help someone hopefully.