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

Firefox problems with Avast web shield on Mac

  • 2 replies
  • 1 has this problem
  • 3 views
  • Paskiausią atsakymą parašė AliceWyman

more options

I have recently installed Firefox onto my iMac. I am now having problems accessing websites with an error message 'Your connection is not secure' I have Avast antivirus software installed. If I disable the Avast Web shield I am able to access websites but, not when the Avast webshield is on and protecting my pc.

Can you please advise?

Thanks.

I have recently installed Firefox onto my iMac. I am now having problems accessing websites with an error message 'Your connection is not secure' I have Avast antivirus software installed. If I disable the Avast Web shield I am able to access websites but, not when the Avast webshield is on and protecting my pc. Can you please advise? Thanks.

All Replies (2)

more options

I posted this a few days ago but, still no reply?

more options

This is copied from What do the security warning codes mean?


You may have enabled SSL scanning in your security software such as Avast, Bitdefender, ESET or Kaspersky. Try to disable this option. More details about this are available in the support article How to troubleshoot security error codes on secure websites.


Hope that helps.