TAC wasnt able to help me.. we were on remote session for 2 days straight and no clue at all.
i found the fix though,, i'm using controller 2400 running aos 5.0.
i use captive portal policy to pop up a browser to start the onboard.
i use my cppm alias name as the the address and this seems to be the problem.
after i changed the address to an ip, everything works perfectly fine.
Ricky.