Pop-Up Blocker stops windows that try to open automatically. Examples:

• Pop-up and pop-under ads
• Windows that open after a page loads
• Windows that open when you leave a site
• Windows that open when you close your browser

Pop-Up Blocker allows windows that open because you clicked to go there. Examples:

• Links that open in new windows
• Pop-ups from any site that you add to your Allowed List
• Press and hold the CTRL key while clicking a link to override Pop-Up Blocker and allow any pop-up windows resulting from the click

Pop-Up Blocker does not stop:

• Instant messaging windows
• Error windows
• Flash or DHTML windows within the browser
• Windows that open because of software or adware on your computer*

* Yahoo! Toolbar 5.5 and newer for Internet Explorer and Yahoo! Toolbar 0.4 and higher for Mozilla Firefox contain Anti-Spy, a Spyware and Adware remover. To see what version you're using, click the Toolbar Settings menu (shown below) and select "About Yahoo! Toolbar".

To get the latest version of Yahoo! Toolbar, go to the Yahoo! Toolbar page. For information about Anti-Spy, please visit the Anti-Spy help page. You can also search for Spyware and Adware information in Yahoo! Search.

For more information about protecting your online security, we recommend that you visit the Yahoo! Security Center.

Note: Pop-Up Blocker is not available for Yahoo! Toolbar for Mozilla Firefox. Mozilla Firefox has a built-in pop-up blocker and does not require an additional one.