Nothing on it, no add ons. It’s a pop up ad from Comcast that has no way to exit out. I suppose if I clicked OK, it would down load their program to my computer, which I do not want.
On Comcast web site the people who have down loaded the program still get the pop up ads.
Try downloading a program called HiJackThis from TrendMicro. If you run it, it won’t change anything on your system at first; it just gives you a list of a lot of programs and utilities that are installed on your system that you might not be able to see otherwise.
Run that scan, and then in the results, look for entries that start with “BHO”. If any of them say XFinity, or Comcast, or something like that, check the box next to them and press the “Remove Selected” button at the bottom.