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How do I clear out website history and website data?

  • 5 wótegrona
  • 1 ma toś ten problem
  • 1 naglěd
  • Slědne wótegrono wót FredMcD

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Please help me. I had a popup website on Firefox telling me I have a virus/malware that was just downloaded and I should call phone number on website for help. I called applecare but they did not know how to fix Firefox, just Safari. We cleared out website history and data there but that did not correct the problem on Firefox. When I shut down and reopened firefox, it gave me th option not to reopen the new bad website and I clicked that and it worked. is that a permanent or temporary fix? If temporary what do I need to do?

I did not have a virus or malware on my computer that I know for sure just annoying popup website. Please advise. Thanks, Lisa

Please help me. I had a popup website on Firefox telling me I have a virus/malware that was just downloaded and I should call phone number on website for help. I called applecare but they did not know how to fix Firefox, just Safari. We cleared out website history and data there but that did not correct the problem on Firefox. When I shut down and reopened firefox, it gave me th option not to reopen the new bad website and I clicked that and it worked. is that a permanent or temporary fix? If temporary what do I need to do? I did not have a virus or malware on my computer that I know for sure just annoying popup website. Please advise. Thanks, Lisa

Wšykne wótegrona (5)

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You should never respond to such a message and close the tab if possible.

You can delete the sessionstore.js file in the Firefox profile folder to clear out session data from the previous session.

You can use this button to go to the current Firefox profile folder:

See also:

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The message popped up on my computer. I didn't respond to anything.

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Please have someone contact me.

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This is the only support for Firefox, and it's free.

The people who answer questions here, for the most part, are other Firefox users volunteering their time (like me), not Mozilla employees or Firefox developers.

If you want to leave feedback for Firefox developers, you can go to the Firefox Help menu and select Submit Feedback... or use this link. Your feedback gets collected at http://input.mozilla.org/, where a team of people read it and gather data about the most common issues.

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Remove History For One Site Open the History Manager <Control><Shift> H. In the search bar, enter the name of the site. Right click on one of the listings and select Forget About This Site. This should remove all information, including any passwords / settings.


Adblock Plus {web link} Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Adblock Plus Pop-up Addon {web link} Adblock Plus Pop-up Addon extends the blocking functionality of Adblock Plus to those annoying pop-up windows that open on mouse clicks and other user actions.

Forum; Adblock Plus Homepage {web link}


You may have ad / mal-ware. Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.