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: * [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner] * [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware] * [http://support.kaspersky.com/faq/?qid=208283363 TDSSKiller - AntiRootkit Utility] * [http://www.surfright.nl/en/hitmanpro/ Hitman Pro] (Needs online Connection) (If safe mode works) * [http://www.eset.com/us/online-scanner/ ESET Online Scanner] (Needs Online Connection) (If safe mode works) [http://windows.microsoft.com/MSE 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. __________________________________________________________________________________ You should also try windows safe mode with networking by tapping F8 when booting on your computer. If this is successful, you should check your Firewall, anti-virus, and scan for Malware and a Possible Rootkit. Refer to * http://kb.eset.com/esetkb/index?page=content&id=SOLN2268&locale=en_US for info going to safe mode.

please check in ''firefox > options > advanced > network > connection - settings...'' if firefox is set up to directly connect to the internet ('no proxy'). [[Firefox and other browsers can't load websites]]