Have you read https://support.mozilla.com/en-US/kb/Error+loading+web+sites#Proxy_errors

Since I can't access the net, I can't use the TOOLS etc. path to correct the problem. Can you give me some more help or advice?

As long as you can open Firefox, you should be able to access the Tools menu. Can you not open Firefox at all?

I have the similar problem except I can get into tools , options etc But when I tick "no proxy and ok " it just reverts back to use proxy

See http://kb.mozillazine.org/Preferences_not_saved and How to fix preferences that won't save

This is a sign of MALEWARE. Go into safemode with networking. Then TOOLS, then Network, then Proxy Setting and choose to turn them off. I just did this for a cleint and then ran MALWAREBYTES.

Kevin

'the mozilla firefox in my computer can't access evrytime i open the firefox always proxy server refusing connection post in my computer and it does'ntwork......how i solved this problem?help me i dont know wat to do....

I had the same issue with both Firefox and IE. There is a tuturial tell that I have to adjust my proxy settings to solve the issue.

I had the same problem, I confirmed it was solve by moddinbg the rules on local firewall. I gave all-permit to firefox application

I found the problem, on my computer at least. Look for a prefs.js file in: C:\Documents and Settings\owner.Desktop\Application Data\Mozilla\Firefox\Profiles\xxxxxx.default\extensions\[email protected]\defaults\preferences. This prefs.js file had all the proxy settings I didn't want, i.e., 127.0.0.1. I deleted the file. Firefox boots up fine now with no need to change the proxy settings under "options" each time. I've spent hours chasing this down. Hope it's helpful to others.

I downloaded foxy proxy and now am able to connect without manually changing my proxy settings every time i open Firefox. It,s the only thing I could find that would work.

I keep getting "the proxy server is refusing connections". When I changed the network setting to "no proxy", I then get the error "Server not found". Any other suggestions?

NEVER FireFox. I loved version 3.6. But now I hate all the latest versions with it's problems, issues, bugs etc. I will use chrome! It is the best browser currently!

Thank you so much this link is very helpful