Fix: “This Connection is Untrusted” Error in Firefox

You have asked Firefox to connect securely to, but we can’t confirm that your connection is secure.

You’ve probably seen this error lots of times and wondered what it meant. Secure websites that require HTTPS connection such as Gmail, Paypal, Yahoo Mail, Facebook and others often show this error message. If you proceed and add exception, you might notice the page won’t load correctly and the display might look rather abnormal. In such cases, some images may not be displayed and lots of functions on the web page may be disabled.

this connection is untrustedThis Connection is Untrusted – What does it mean?

I really don’t need to explain all the technicalities, I’m going to keep it as simple as possible. Some sites require your connection to be encrypted and secure so as to protect your data. Websites that require SSL (Secure Sockets Layer) encryption or HTTPS connection always send some sort of certificate to your web browser which it checks whether it’s valid or not. When the secure connection certificate is invalid, your browser may be unable to connect with the website. There may be two reasons for this:

1. You computer time is incorrect.

2. The site is using an expired certificate

3. The site you’re trying to connect to may be illegal, using a fake SSL certificate

How to fix this

If you’re pretty sure the site is legal and you shouldn’t be having problems with HTTPS connections, be sure your computer date is set correctly. This should get it fixed.

If your computer date and time is set correctly and you’re still seeing this, there’s definitely a problem with the website and you should be careful about sharing sensitive data with such sites. No legitimate site will use an invalid SSL certificate.


  1. tracy says

    thanks Don. I am glad to be able to fix it according to your explanation. I was in trouble to see that message when I try to open g-mail through fire-fox. thanks again. have a nice day !!!!!

  2. says

    Hello Don, I really do not know how to express my gratitude to you…this problem has being giving me headache. Why? I couldn’t check my gmail for a week, quite frustrating but when I google and got your site, I simply apply what you suggested. I set my laptop date and time…and viola the problem is solved. Thank you so much.

  3. says

    I usually fix this problem by confirming my date and time and you have written this solution in your article. Thanks a lot for writing this nice tutorial.

  4. georgina says

    Your advice about logging on to Yahoo worked. My clock was off, somehow in next month. Thank you!!!!!!!!!!

  5. Anna Sher N. Cadiz says

    Gosh!!!! im so so so thankful to you! it really helped a lot what you had posed ..i found out that the time is incorrect ..thank you!! i love you mwahhhhhhhhhhhhhhhhhhhhhhhhhhhhh!!!!!!!!!!

  6. Jamshid says

    For me it only happens in Firefox. I don’t even get the “I Understand the Risks” part. My dialog box ends at “Technical Details”. BTW, the error code is: sec_error_unknown_issuer Any ideas?

    • says

      If “I Understand the Risks” is missing then the page may be opened in an iFrame. Try to right-click, and in the context menu, select “This Frame: Open Frame in New Tab”. That might do it. Your firewall program might be intercepting secure connections and sending the wrong certificate.

  7. Brenda says

    I have been getting this error message only on google plus for the last week or so. My clock is set properly. I also don’t get the “I Understand the Risks” option. I tried your suggestion about iFrame, but it was not an option when I right-clicked anywhere on the page. What am I doing wrong? And why is this a problem all of a sudden with google plus? Any ideas? Thanks :)

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