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Hi. After upgrading firefox, my internet connection is lost, this includes other browsers.


I finally decide to upgrade my firefox 3.6 version. After doing so firefox would not connect to the internet. The first thing I tried was IE and that didn't connect either. The next thing I tried was a system restore. (to get back to firefox 3.6). Now firefox doesn't open at all. I thought to try to change some of the Norton Antivirus settings, but that software is not opening either. Here is where I stand, firefox doesn't open, IE doesn't connect to the internet, and Norton antivirus doesn't open. I'm on a laptop to summit my question. The machine that I'm have difficulty with is a windows XP service pack 3 os.

Modified by seedeebranko

Additional System Details

This started when...

after attempted upgrade


  • User Agent: Mozilla/5.0 (Windows NT 6.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

More Information

dumdidadida 172 solutions 1436 answers


Can you also please post the link of the Firefox download??

Question owner

I can't find the link. I think it was a link to upgrade to firefox 12.

dumdidadida 172 solutions 1436 answers

Was it an automatic upgrade from within the browser or did you download the file? If you downloaded the latest Firefox you can check for the Mozilla Corporation Digital Signatures by right-clicking on it > Properties.

Tyler Downer
  • Administrator
  • Moderator
1165 solutions 6639 answers

Try redownloading Firefox from www.getfirefox.com. Firefox shouldn't be causing other browsers to lose their internet connection, it is sounding like you either have a virus, or your security software is acting up

Question owner

It was an automatic upgrade.

dumdidadida 172 solutions 1436 answers

As noted by Tylerdowner, Firefox wouldn't affect other programs, or change OS network settings. It could be a coincidence in that there is an issue with Norton AV which occurred around the same time, or there could be other issues. You can try to temporarily disable Norton, restart the PC and check. Please note that in many cases disabling wouldn't be enough, you may have to go beyond that. Please see AV/Firewall pitfalls. If you suspect problems with the Norton installation, the support would also be helpful.

Question owner

That was my initial thought, Norton. Although they aren't admitting it.

Thanks for the input!