How do I remove a nuisance pop-up?
I keep getting pop-up fir xfinity on line services whenever I access a browser. I do not use Xfinity (Comcast), nor do I wish to use it. I don't know how it got into my browser, but I sure would like to get it out of my browser. How do I do this-I tried blocking the page, but it did not work.
Thanks for any help you can give me.
MacBook Pro, OS X Yosemite (10.10.3), MacBook Pro Mid 2012 13 Inch