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

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

Wrong messages about invalid certifcates - "This connection is untrusted"

  • 1 antwoord
  • 9 hierdie probleem
  • 3 views
  • Laaste antwoord deur cor-el

more options

Introduced with appr. FF 11/12/13 I experienced very often, nearly reproducible, "This connection is untrusted" messages when trying to connect to 100% trustworthy sites with 100% trustworthy and valid certficates. Sometimes on initial connect, sometimes within a https session. Very often reproducible:

- Connect to https site - fine - connect to whatever http (NOT https) site in another window/tab: fine - switch to first tab window/tab and navigate to different page: "connection is untrusted"

When message appears on first connect: Close FF, restart FF. Maybe several times.

As I've checked my machine with several malware etc. tools available to be sure not to have any trojans or similar sh... on my machine, also traced with sysinternal.com tools the TCP/IP traffic, process activtity etc., I'm sure that my machine is clean.

As now, FF 14.0.1, this DOES NOT happen again, have there been any known issues about this behaviour?

Introduced with appr. FF 11/12/13 I experienced very often, nearly reproducible, "This connection is untrusted" messages when trying to connect to 100% trustworthy sites with 100% trustworthy and valid certficates. Sometimes on initial connect, sometimes within a https session. Very often reproducible: - Connect to https site - fine - connect to whatever http (NOT https) site in another window/tab: fine - switch to first tab window/tab and navigate to different page: "connection is untrusted" When message appears on first connect: Close FF, restart FF. Maybe several times. As I've checked my machine with several malware etc. tools available to be sure not to have any trojans or similar sh... on my machine, also traced with sysinternal.com tools the TCP/IP traffic, process activtity etc., I'm sure that my machine is clean. As now, FF 14.0.1, this DOES NOT happen again, have there been any known issues about this behaviour?

All Replies (1)

more options

Which security software (firewall, anti-virus) do you have?

Some security software intercept secure connections and send their own certificate.

Some examples are ESET and Bitdefender.

  • ESET setup -> advanced setup -> extend web and email tree -> SSL
  • SSL protocol: Do not scan SSL protocol

Disable Scan SSL in the BitDefender settings.

  • BitDefender -> Privacy settings -> disable Scan SSL