We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

i have prolblem like this, server does not support RFC 5746, see CVE-2009-3555 - can i get solution

  • 1 reply
  • 26 have this problem
  • 8 views
  • Last reply by cor-el

more options

server does not support RFC 5746, see CVE-2009-3555

server does not support RFC 5746, see CVE-2009-3555

All Replies (1)

more options

The message about CVE-2009-3555 is meant for webmasters to make them aware that they need to fix their servers. You can ignore that error as a normal user (visitor). Firefox 3.6 versions can detect such a misconfiguration and displays a warning in the "Tools > Error Console".