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How do I get firefox to work after installing an update (Can I go back to an older version if possible)?

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I recently updated from Firefox 3.6.3 to 3.6.8. I skipped previous updates because of similar problem I'm experiencing now however now it is worse. Immediately after installation, messages windows pop up. The FIRST window says: “Firefox has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available.”

The SECOND window (with a red circle surround a white ‘X’) says: “firefox.exe – Unable to Locate Component. This application has failed to start because xul.dll was not found. Re-installing the application may fix this problem.”

The THIRD window is called the “Mozilla Crash Reporter. We’re Sorry. Firefox has a problem and crashed…” where it gives me the option of submitting a report and restarting (which I have done).

The problem happened during previous attempted updates which is why I tend to avoid Firefox updates until today. However, in the past all I would do is manually power off the computer and restart the computer. Firefox never completed the installation so I was able to use the older version of Firefox.

Now I cannot do that because Firefox is updated to 3.6.8 which refuses to open. How can this problem get fixed? I am not “tech savvy” but loyal to Firefox (and for now I have no access to all my bookmarks).

Thank you.


User Agent

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.125 Safari/533.4

I recently updated from Firefox 3.6.3 to 3.6.8. I skipped previous updates because of similar problem I'm experiencing now however now it is worse. Immediately after installation, messages windows pop up. The FIRST window says: “Firefox has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available.” The SECOND window (with a red circle surround a white ‘X’) says: “firefox.exe – Unable to Locate Component. This application has failed to start because xul.dll was not found. Re-installing the application may fix this problem.” The THIRD window is called the “Mozilla Crash Reporter. We’re Sorry. Firefox has a problem and crashed…” where it gives me the option of submitting a report and restarting (which I have done). The problem happened during previous attempted updates which is why I tend to avoid Firefox updates until today. However, in the past all I would do is manually power off the computer and restart the computer. Firefox never completed the installation so I was able to use the older version of Firefox. Now I cannot do that because Firefox is updated to 3.6.8 which refuses to open. How can this problem get fixed? I am not “tech savvy” but loyal to Firefox (and for now I have no access to all my bookmarks). Thank you. == User Agent == Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.125 Safari/533.4

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.125 Safari/533.4

More Information

I recently updated from Firefox 3.6.3 to 3.6.8. I skipped previous updates because of similar problem I'm experiencing now however now it is worse. Immediately after installation, messages windows pop up. The FIRST window says: “Firefox has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available.”
The SECOND window (with a red circle surround a white ‘X’) says: “firefox.exe – Unable to Locate Component. This application has failed to start because xul.dll was not found. Re-installing the application may fix this problem.”
The THIRD window is called the “Mozilla Crash Reporter. We’re Sorry. Firefox has a problem and crashed…” where it gives me the option of submitting a report and restarting (which I have done).
The problem happened during previous attempted updates which is why I tend to avoid Firefox updates until today. However, in the past all I would do is manually power off the computer and restart the computer. Firefox never completed the installation so I was able to use the older version of Firefox.
Now I cannot do that because Firefox is updated to 3.6.8 which refuses to open. How can this problem get fixed? I am not “tech savvy” but loyal to Firefox (and for now I have no access to all my bookmarks).
Thank you.

Morbus 135 solutions 2340 answers

Hello Michael.

Hopefully this support article is what you need:

https://support.mozilla.com/en-US/kb/Firefox+will+not+start

In any case, it's possible that you are having a problem with some Firefox add-on that is hindering your Firefox's normal behavior. Have you tried disabling all add-ons (just to check), to see if Firefox goes back to normal?

Whenever you have a problem with Firefox, whatever it is, you should make sure it's not caused by one (or more than one) of your installed add-ons, be it an extension, a theme or a plugin. To do that easily and cleanly, run Firefox in safe mode (don't forget to select Disable all add-ons when you start safe mode). If the problem disappears, you know it's from an add-on. Disable them all in normal mode, and enable them one at a time until you find the source of the problem. See this article for information about troubleshooting extensions and themes and this one for plugins.

If you need support for one of your add-ons, you'll have to contact its author.

If the problem is not disappears when all add-ons are disabled, please tell me, so we can work from there. Please have no fear of following my instructions to the line, as all can be easily undone.

Also, if you want to use an older version of Firefox, please use Firefox 3.5.11. Only versions 3.5.11 and 3.6.8 are supported, and both contain all the latest security fixes. Using any other version is unsafe and not recommended.

Hello Michael. Hopefully this support article is what you need: https://support.mozilla.com/en-US/kb/Firefox+will+not+start In any case, it's possible that you are having a problem with some Firefox add-on that is hindering your Firefox's normal behavior. Have you tried disabling all add-ons (just to check), to see if Firefox goes back to normal? Whenever you have a problem with Firefox, whatever it is, you should make sure it's not caused by one (or more than one) of your installed add-ons, be it an extension, a theme or a plugin. To do that easily and cleanly, run Firefox in [http://support.mozilla.com/en-US/kb/Safe+Mode safe mode] (don't forget to select ''Disable all add-ons'' when you start safe mode). If the problem disappears, you know it's from an add-on. Disable them all in normal mode, and enable them one at a time until you find the source of the problem. See [http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes this article] for information about troubleshooting extensions and themes and [https://support.mozilla.com/en-US/kb/Troubleshooting+plugins this one] for plugins. If you need support for one of your add-ons, you'll have to contact its author. If the problem is not disappears when all add-ons are disabled, please tell me, so we can work from there. Please have no fear of following my instructions to the line, as all can be easily undone. Also, if you want to use an older version of Firefox, please use Firefox 3.5.11. Only versions 3.5.11 and 3.6.8 are supported, and both contain all the latest security fixes. Using any other version is unsafe and not recommended.