MapsFox or MapsFox ads is an adware that will display pop-ups, in-line ads, fake coupons and advertising banners on your screen. Clicking any of these modifies your browser search and homepage. The adware will then send you to malicious websites to get money from you or infect your computer further. It may also prevent you from changing your settings back. MapsFox is usually installed through bundled software without you knowing. You have to remove it immediately!