How to Stop Pop Under Advertising

By Sarah Barnes

It is not as intrusive as pop-up ads, but pop-under advertising in your Internet browser is still pretty annoying. Pop-unders work the same way as pop-ups: when you load a website, the ad loads in a new window. You might not even notice the ad until you close your browser, but pop-unders can slow down your computer and Internet connection. These steps won't prevent every single pop-under ad from sneaking up, but they should stop most from appearing and make your Web browsing sessions more enjoyable.

Things You'll Need

  • Computer with Internet connection
  • Virus/spyware scanning software

Step 1

Check your Internet browser's security settings. In Firefox, go to Tools --> Options --> Content, and check "Block pop-up windows." In Internet Explorer, go to Tools --> Internet Options --> Privacy, and check "Turn on Pop-Up Blocker." Pop-under ads work the same way as pop-ups, so choosing this option should get rid of most of them.

Step 2

Run a virus/spyware scan. Sometimes, malicious software on your computer can cause pop-under ads to appear during a browser session. If you don't already have antivirus software installed, you can find free versions online. Follow the software's instructions and make sure to remove or quarantine any problematic files it finds.

Step 3

Avoid sites that have a lot of advertising, such as free online games, forums, free adult content, and illegal content such as free music and movie downloads. These sites make their money off of advertising and tend to clutter up their pages with lots of ads. This can slow down your browser and make it more susceptible to spyware attacks.

Step 4

Install a filter in your browser that blocks most website advertising. In Firefox, this filter is called AdBlock Plus and can be installed through the Add-ons menu under Tools. Internet Explorer users can install an add-on called AdBlockIE by downloading the application from the developer's website. Note that ad-blocking filters are not perfect. They don't block all ads and sometimes block content you actually want to see.

Step 5

If you're still having major problems with pop-under advertising after trying the above steps, it is probably time to call a professional. Your computer might be infected with a major virus or spyware software that regular antivirus problems aren't catching.