Facebook Certificate Error Firefox
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is Untrusted" error ... Firefox Editing Tools Article Discussion Edit Article Translate Article Show Translations What Links Here Show History Customize this article Firefox Version 51 Version 50 Version 49 Version 48
Certificate Error Firefox But Not Ie
Version 47 Version 46 Version 45 Windows 8 Windows 7/Vista Windows XP Mac Linux Windows firefox certificate error this connection is untrusted 10 Explore more topics Basic browsing Install and update Sync and save Chat and share Do more with apps Protect your privacy firefox certificate error all sites Manage preferences and add-ons Fix slowness, crashing, error messages and other problems Was this article helpful? "This Connection is Untrusted" error message appears - What to do This article applies to older versions of Firefox (versions 43
Firefox 3 Certificate Error
and below). If you see the error message Your connection is not secure, see the article What does "Your connection is not secure" mean?. This article describes why the This Connection Is Untrusted error message may appear when trying to visit secure (https) websites in Firefox. For troubleshooting secure connection problems with the error message Secure Connection Failed, see the Troubleshoot the "Secure Connection Failed" error message article. For troubleshooting other error messages, see
Firefox Ssl Certificate Error
Websites don't load - troubleshoot and fix error messages. Note: If you see this error message on major sites like Google, Facebook, YouTube and others in user accounts protected by Microsoft Family Safety filter, please refer to Microsoft's documentation for Windows Update KB2965142 (published on 6/9/2014) and Windows Update KB2981655 (published on 8/11/2014). Note: You may currently see this error message on major sites like Google, Facebook, YouTube and others on Windows 10 in user accounts protected by Microsoft family settings. To turn these settings off for a particular user, see the Microsoft support article, Turn off Microsoft family settings. Table of Contents1 Certificates and identification2 Get out of there!3 Technical information3.1 The certificate will not be valid until (date)3.2 The certificate expired on (date)3.3 The certificate is not trusted because the issuer certificate is unknown3.4 The certificate is not trusted because it is self-signed3.5 The certificate is only valid for (site name)3.6 Corrupted certificate store4 Bypassing the warning Certificates and identification When you visit a website whose web address starts with https, your communication with the site is encrypted to help ensure your privacy. Before starting the encrypted communication, the website will present Firefox with a "certificate" to identify itself. The certificate helps Firefox determine whether the site you're visiting is actually the site that it claims to be.
was archived. Please ask a new question if you need help. www.facebook.com uses an invalid security certificate 5 replies 51 have this problem firefox certificate error no issuer chain 3297 views Last reply by krmc 9 months ago krmc Posted 1/8/16, 9:20
Firefox Certificate Error Google
AM All other websites seem to work fine, but when I try to visit Facebook, I get an error thunderbird certificate error message as follows: This Connection is Untrusted You have asked Firefox to connect securely to www.facebook.com, but we can't confirm that your connection is secure. Normally, when you try to connect securely, https://support.mozilla.org/en-US/kb/connection-untrusted-error-message sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified. What Should I Do? If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue. This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox only https://support.mozilla.org/questions/1103476 connect to it securely. As a result, it is not possible to add an exception for this certificate. www.facebook.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported. (Error code: sec_error_unknown_issuer) I have tried following many of the suggestions on these forums, but to no avail. when I looked up the certificate it says its from OpenDNS, Inc All other websites seem to work fine, but when I try to visit Facebook, I get an error message as follows: This Connection is Untrusted You have asked Firefox to connect securely to www.facebook.com, but we can't confirm that your connection is secure. Normally, when you try to connect securely, sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified. What Should I Do? If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue. This site uses HTTP Strict T
for Mobile and OpenDNS - Inconsistency with block pages Blocking Android and iOS Apps How to: Running a TCP Traceroute CradlePoint: OpenDNS Integration Setup Avast! 2015 Security Suite Secure DNS and OpenDNS https://support.opendns.com/hc/en-us/articles/227988767--opendns-com-Certificate-errors-Adding-Exceptions Convert Internationalized Domain Names to ASCII Domain Names Known issues and resolution: iOS 8 and the Umbrella client for iPad and iPhone iOS 8 Mobile VPN Upgrade Instructions See more *.opendns.com Certificate errors http://superuser.com/questions/871087/facebook-com-returning-invalid-security-certificate - Adding Exceptions Alexander Harrison Updated September 26, 2016 15:37 Overview: *.opendns.com certificate errors: adding an exception to the browser. GOOD NEWS! A solution for this problem that is easier to manage certificate error and persistent for all sites is now available! As a result, the information below is still applicable but can now be worked around with a permanent solution. We encourage you to try installing the OpenDNS Root CA with this article: https://support.opendns.com/entries/98279288 Why does this occur? This error is caused by a HTTPS site's certificate expecting to load the original site (like firefox certificate error internetbadguys.com, facebook.com, twitter.com) but is being redirected to the OpenDNS block page which the certificate is not signed for. Effectively, the block page is appearing instead of the certificate that the browser (correctly) expects and it's warning you there may be a problem with the connection. In fact, there is an issue: OpenDNS is intercepting the request and blocking it, as per the policies you've configured. This is fully expected given the way in which browser security is designed.The warnings and browser behavior vary slightly between Chrome, Safari, and Firefox, but the root cause is the same in all cases. When using Block Page Bypass, the scenario changes slightly. Block Page Bypass is essentially an HTTP proxy, and when you request items over HTTPS, we present you an OpenDNS certificate from our block page since we're not able to impersonate other certificates or identities. Once you bypass an HTTPS site, your traffic is then going through the OpenDNS proxy server. This proxy server is using a certificate registered to "*.opendns.com" which is not valid for the domain requested. The error can be confusing to users and you may wish to stop it from appearin
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Facebook.com returning invalid security certificate up vote 0 down vote favorite I am on a network which is secured by Cyberroam in my University. Recently, they have made some changes to their security policy and have 'blocked' facebook.com. I kind of used to think that blocking https sites is quite not possible since the connection is encrypted. Q1. How did they achieve this? Q2. Is it possible to access facebook.com on this connection in any way? I am getting the error: This connection is untrusted. This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox only connect to it securely. As a result, it is not possible to add an exception for this certificate. Thanks firefox security certificate share|improve this question asked Jan 29 '15 at 12:48 Super Loser 32 If I were to hazard a guess. The University is handling the secure connection to Facebook.com themselves. –Ramhound Jan 29 '15 at 13:05 1 possible duplicate of Firefox: This connection is untrusted + Behind corporate firewall –Ramhound Jan 29 '15 at 13:05 add a comment| 1 Answer 1 active oldest votes up vote 1 down vote accepted TLS in HTTPS protects the HTTP request, but it doesn't protect the lower layers. That is, a HTTPS website can still be blocked by inspecting the TLS "Server Name Indication" header (the same feature that's used for HTTPS virtual hosting), or by IP address (if the client doesn't request any specific server via TLS SNI), both of which are sent outside the TLS tunnel. However, Cyberroam in your case does neither; it uses the sledgehammer approach – it intercepts all HTTPS handshakes, decrypts the connection by pretending that it's the client, inspects it, and re-encrypts it using its own TLS certificate. So instead of a single TLS handshake... web server ⇆ browser ...you now have two: web server ⇆ firewall (pretending to be the browser) firewall (pretending to be the server) ⇆ browser Basica