lovecoco- i believe i know why you ask this question. If you miss your bill, comcast turns off your internet and all you see is this annoying comcast page that asks you to download software (which doesnt work) or if you are a technician. neither work. (tech does but you cannot login)
to get rid of this you have to pay your bill. if you did pay your bill and you do not know why it is there you should call comcast and they will reset it.
hope i helped!