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Firefox slow after updating Java 7 update 65

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Hi, I'm hoping someone can help with the problems I'm having.

This morning I was prompted to install the latest version of Java, which I did, and now Firefox is all messed up.

At first it was incredibly slow, so I reset Firefox to see if that would help. It helped a bit but kept slowing up, so I uninstalled Java hoping that would solve the problem. Then I couldn't get any pages to load on Firefox at all. So I have just reset Firefox again, and it is alternating between being able to load my home page and not being able to load anything at all.

I am running Windows XP if that helps. Internet Explorer isn't working at all either, but my wireless network connection status window says I'm connected. I am posting this from another computer.

Hi, I'm hoping someone can help with the problems I'm having. This morning I was prompted to install the latest version of Java, which I did, and now Firefox is all messed up. At first it was incredibly slow, so I reset Firefox to see if that would help. It helped a bit but kept slowing up, so I uninstalled Java hoping that would solve the problem. Then I couldn't get any pages to load on Firefox at all. So I have just reset Firefox again, and it is alternating between being able to load my home page and not being able to load anything at all. I am running Windows XP if that helps. Internet Explorer isn't working at all either, but my wireless network connection status window says I'm connected. I am posting this from another computer.

Chosen solution

Some problems occurs when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version)
  • Remove Firefox from your program's list of trusted or recognized programs, then add it back. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}

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All Replies (3)

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Where did the update message come from? Was it lagit? If Firefox and Win IE are effected, then it is likely the cause is outside both. First run most or all of these programs on your windows computer;


Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.

You can try these free programs to scan for malware, which work with your existing antivirus software:

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Did this fix your problems? Please report back to us!

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Chosen Solution

Some problems occurs when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version)
  • Remove Firefox from your program's list of trusted or recognized programs, then add it back. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}

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Thanks for replying.

I think the reason IE wasn't working either was because there was a (separate) network issue that I found and fixed later.

Anyway, Firefox seems to have gradually improved speed and is working OK now.

Pretty sure it was the Java, not malware or a firewall issue as those were things I thought of and tested. I think the moral of the story is to treat Java updates with extreme caution as every single new release seems to cause people a lot of trouble with FF.