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I have updated Windows XP with SP3, but still cannot download Firefox to my computer


Firefox has always been my browser, but I lost function when I updated to Firefox 18. I backed up my profile to a flash drive then deleted Firefox from my computer thinking to download again. I updated Windows XP with SP3, but still am unable to download latest version of Firefox.

Additional System Details


  • User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; BOIE8;ENUSMSCOM)

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  • Top 25 Contributor
  • Moderator
251 solutions 3015 answers

Helpful Reply

Hello aniwhitlo,

Thank you for posting on Mozilla Support. We value and appreciate you as a user.

At this moment there are known download issues with Firefox 18. If you have 18 installed, we suggest that you revert back to version 17.0.1; You can get then here: http://www.mozilla.org/en-US/products/download.html?product=firefox-17.0.1&os=win&lang=en-US

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Modified by Andrew

  • Top 25 Contributor
616 solutions 4258 answers

Helpful Reply

Hi aniwhitlo, check Internet security software, including Configure firewalls so that Firefox can access the Internet, antivirus programs, anti-spyware programs, and others can block certain file downloads.

Check the settings in your security software to see if there is an setting that may be blocking downloads. Configure firewalls so that Firefox can access the Internet.

You can try temporarily disabling antivirus/firewall, to seeing if downloads work, and then re-enabling the software.

thank you