Do you want to share the address? Add spaces around the . before .com so it isn't "live".

If it's like another one I saw that has the audio, it will repeatedly pop up an "alert" dialog with an OK button. If you click that, you should eventually get one with a checkbox to not show any more alert dialogs. I am attaching an example screenshot. If you check that box and OK away any remaining dialogs, you should be able to close the tab.

Does that work for you?

Something like that is sometimes called ransomware because the browser ends up being locked to that web page.

If it's like the fake FBI/Interpol browser lock page, This add-on can stop such pages; disallow Script Button {web link} The Disallow Script button looks like a letter "M" and the title is the Minus Script, drag and drop the button on a toolbar. If the button is not displayed then nothing operates, except rules for plugins.

To Jscher2000:

This is the address I see:

http://deniedaccess81 . com/od2quf/index.php?s1=4906&vcid=5b5bcc2d-1cfa-43f6-ba77-b9c05b6119cf&dfn=(888)%20599-25518&dn=%2B18885992551&a=ADSU

The image you attached has a message very similar to the one I see...not exactly i.e different number to call

The phrase I see at the bottom that you can check and press ok is:

Allows dialogs from deniedaccess81, com to take you  to the tab

So not the same phrase in your image.

So are you saying to keep clicking the ok bottom until I get the phrase on the image you attached?

So there is nothing I have to "remove"? I don't actually have a virus? Searching that error, some direct you to a number of steps to do via the control panel, etc.

See also:

• https://en.wikipedia.org/wiki/Ransomware
• https://www.avast.com/c-ransomware
• https://www.google.com/search?q=ransomware

Hi alegnagon, that site is blocked by Firefox's deceptive site warning and by our security software, so I have no idea of the details of how it works. If you didn't install anything from that site, it's unlikely that the problem is on your end. However, it never hurts to do a little cleaning just in case...

Here's my suggested procedure for tracking down and cleaning up bad add-ons, hijackers, and other troublemakers. I know it seems long, but it's not that bad.

(1) Open the Windows Control Panel, Uninstall a Program. After the list loads, click the "Installed on" column heading to group the infections, I mean, additions, by date. This can help in smoking out undisclosed bundle items that snuck in with some software you agreed to install. Take out as much trash as possible here. (If in doubt, feel free to post a screenshot.)

(2) Open Firefox's Add-ons page using either:

• Ctrl+Shift+a
• "3-bar" menu button (or Tools menu) > Add-ons
• in the Windows "Run" dialog, type or paste
  firefox.exe "about:addons"

In the left column, click Plugins. Set nonessential and unrecognized plugins to "Never Activate".

In the left column, click Extensions. Then, if in doubt, disable (or Remove, if possible) unrecognized and unwanted extensions. Bear in mind that all extensions are optional.

Often a link will appear above at least one disabled extension to restart Firefox. You can complete your work on the tab and click one of the links as the last step.

Any improvement?

(3) You can search for remaining issues with the scanning/cleaning tools listed in our support article: Troubleshoot Firefox issues caused by malware. These on-demand scanners are free and take considerable time to run. If they finish quickly and especially if they require payment, you may have a serious infection. I suggest the specialized forums listed in the article in that case.