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.

Avatar for Username

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

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

Facebook and Tumblr are not working!

  • 3 fhreagra
  • 1 leis an bhfadhb seo
  • 2 views
  • Freagra is déanaí ó LaurenM01

LaurenM01
LaurenM01
more options

Just downloaded Firefox after Chrome kept crashing except I'm having the problem where when I try to go to Facebook it redirects me saying that "the site is not secure." I've gone through all the relevant security settings and nothing it working.

Then I tried Tumblr to see if this was the case with all social media. It let's the site through but only with text and no formatting or graphics. Again, I tried going through the settings but I see absolutely nothing worthwhile or helpful.

Please help!

Just downloaded Firefox after Chrome kept crashing except I'm having the problem where when I try to go to Facebook it redirects me saying that "the site is not secure." I've gone through all the relevant security settings and nothing it working. Then I tried Tumblr to see if this was the case with all social media. It let's the site through but only with text and no formatting or graphics. Again, I tried going through the settings but I see absolutely nothing worthwhile or helpful. Please help!

Athraithe ag LaurenM01 ar

Réiteach roghnaithe

Hey Lauren!

This is definitely one annoying error message. I believe it's caused by your antivirus software. I see you have a Avast addon installed. That lets me know you have Avast installed on your system. My advice is to go into the Avast settings and uncheck the "Enable HTTPS Scanning" setting. Once you have done that, retry visiting the site in both Firefox and Chrome and let me know the results. Thanks!

Detailed instructions on how to do that: https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER#w_the-error-occurs-on-multiple-secure-sites

Read this answer in context 👍 1

All Replies (3)

NoahSUMO
NoahSUMO
  • Top 25 Contributor
  • Moderator
more options

Réiteach Roghnaithe

Hey Lauren!

This is definitely one annoying error message. I believe it's caused by your antivirus software. I see you have a Avast addon installed. That lets me know you have Avast installed on your system. My advice is to go into the Avast settings and uncheck the "Enable HTTPS Scanning" setting. Once you have done that, retry visiting the site in both Firefox and Chrome and let me know the results. Thanks!

Detailed instructions on how to do that: https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER#w_the-error-occurs-on-multiple-secure-sites

NoahSUMO
NoahSUMO
  • Top 25 Contributor
  • Moderator
more options

Hi Lauren, sorry to bug you but just wanted to confirm that my post fixed your problem. Sometimes people mark their posts as solved by accident. So I just want to be sure. :)

LaurenM01
LaurenM01 Úinéir na ceiste
more options

@Noah_SUMO Hi! Yes! It fixed it right up! Thank you so much!