Wont let me go on trusted websites; Twitter, Youtube?
Whenever I go on a trusted site by many others, I get this error
" twitter.com uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer) "
I've been bugging around the forums finding many answers that have been working for others except for me. The only add-on I have installed is myWOT (Web of Trust), and my date on the computer is correct. I've tried everything including resetting Firefox, clearing the cache, cookies, and other junk I get from search history, and other things but it just makes it worst. Anyone know what is happening?
Todas as respostas (7)
If you get the error again. Add a permanent security exception to the certificate.
I cannot add a security exception to it, that is why most of the solutions on the forums did not work.
Can you provide a screenshot of the error? https://support.mozilla.org/en-US/kb/how-do-i-create-screenshot-my-problem
Who actually is the issuer of the problematic cert?
sec-unknown-issuer
When you open the page in your browser, can you find the lock icon in the address bar and click it to get to the security certificate? I have attached a series of screen shots showing what I mean and where the issuer information is in the certificate viewer.
also see:
https://support.mozilla.org/kb/Secure+Connection+Failed
Update your Shockwave Flash v14. http://get.adobe.com/shockwave/ The link for Flash Player is: http://get.adobe.com/flashplayer/
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This Connection is Untrusted is sometimes caused because the computer system clock is wrong. Check the time / date / time zone settings.
Check the date and time in the clock on your computer: (double) click the clock icon on the Windows Taskbar.
Check out why the site is untrusted and click "Technical Details to expand this section.
If the certificate is not trusted because no issuer chain was provided (sec_error_unknown_issuer) then see if you can install this intermediate certificate from another source.
You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates.
- Click the link at the bottom of the error page: "I Understand the Risks"
Let Firefox retrieve the certificate: "Add Exception" -> "Get Certificate".
- Click the "View..." button and inspect the certificate and check who is the issuer of the certificate.
You can see more Details like intermediate certificates that are used in the Details pane.
If "I Understand the Risks" is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use "This Frame: Open Frame in New Tab".
- Note that some firewalls monitor (secure) connections and that programs like Sendori or FiddlerRoot can intercept connections and send their own certificate instead of the website's certificate.
- Note that it is not recommended to add a permanent exception in cases like this, so only use it to inspect the certificate.