Since recent download of Firefox, "unable to connect"; Perhaps an older version will work; checked my firewall to allow, etc.; I'm connecting to you through Safari

I've been using Firefox until a recent download and now it won't connect. Perhaps an older version will work; checked my firewall to allow, etc.; I'm connecting to you through Safari; For some reason Internet Explorer is also not connecting. My computer uses Vista.

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.

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