This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Wannan tattunawa ta zama daɗaɗɗiya. Yi sabuwar tambaya idan ka na bukatar taimako.

server not found!!!!

  • 2 amsoshi
  • 1 yana da wannan matsala
  • 1 view
  • Amsa ta ƙarshe daga philipp

more options

After Firefox updated, all I get when it opens is a "Server not found" message. Windows Explorer and Google Chrome work fine. I verified that i do not us a proxy server. I deleted and re-added Firefox to my list of acceptable programs in Windows Firewall. I updated my Microsoft Security Essentials. What should I do next?

After Firefox updated, all I get when it opens is a "Server not found" message. Windows Explorer and Google Chrome work fine. I verified that i do not us a proxy server. I deleted and re-added Firefox to my list of acceptable programs in Windows Firewall. I updated my Microsoft Security Essentials. What should I do next?

All Replies (2)

more options

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. For detailed instructions, see

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

more options

hi, please go into the programs section of your system control panel and uninstal nvidia forceware network access manager in case you have that present.

Connectivity or crashing issues after Firefox 43 update