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Pop-up Blocker in Firefox, Safari & Internet Explorer

This document explains how to use and configure pop-up blockers in Firefox, Safari, and Internet Explorer web browsers.


To open the "Popup Windows" menu:

  1. Open Firefox.
  2. Go to Firefox menu then Preferences then  Web Features. From there you have two options:
    • Check Block Popup Windows if you would like to all popups.
    • Click on Allowed Sites to allow popups from specified websites.
      1. Enter the URL of the site you want to allow popups from and click Allow.
      2. If you wish to remove a site from your allowed list, highlight it and click Remove Site.
      3. To remove all sites, click Remove All Sites will clear your allowed sites list.


  • 1. Open the Safari web browser.
  • 2. Click on Safari menu in the upper-left hand corner of the screen.
  • 3. You can then toggle the popup blocker on or off by checking (or un-checking) Block Pop-up Windows.

We recommend turning the popup blocker off the first time you visit a website. Some websites use popups as part of the infrastructure, and it is necessary to not block them. After you visit a site for the first time, you can determine if you want to block popups or not.