This connection is untrusted; Unknown issuer

Similar Questions

• All of a sudden, after a update of firefox, I get "this connection is untrusted" for Facebook, no matter if I use http: or https:, WHY?

  All of a sudden, after a update of firefox, I get "this connection is untrusted" for Facebook, no matter if I use http: or https:, WHY? Here are all the details of the error message:

  This connection is Untrusted

  You asked Firefox to connect safely to facebook.com, but we cannot confirm that your connection is secure.

  Normally, when you try to connect safely, sites will present a reliable identification to prove that you're in the right place. However, the identity of this site cannot be verified.
  What should I do?

  If you normally connect to this site without problems, this error can mean that someone is trying to impersonate the identity of the site, and you should not continue.

  This site uses HTTP Strict Transport Security (HST) to specify that Firefox didn't connect safely. As a result, it is not possible to add an exception for this certificate.

  Facebook.com uses an invalid security certificate.

  The certificate is not trusted because the issuer certificate is unknown.

  (Error code: sec_error_unknown_issuer)

  (Also included a screenshot).

  COR - el said

  You can check the date and time and time zone in the clock on your computer: (double) click on the clock icon in the Windows taskbar.

  • https://support.Mozilla.org/KB/secure+connection+failed

  You can retrieve the certificate and check details such as WHO issued the certificates and the expiration dates of certificates.

  • Click on the link at the bottom of the error page: "I understand the risks".
  • Let Firefox recover the certificate: "Add Exception"-> "get certificate".
  • Click on the button "View" and inspect the certificate and the Coachman, who is the issuer.

  You can see more details like the intermediate certificates that are used in the Details tab.

  If you cannot inspect the certificate by "I understand the risks", then try this:

  Open the chrome URI by pasting or typing this URI in the address bar to open the window "Add the Security Exception" and to check the certificate:

  • chrome://pippki/content/exceptionDialog.XUL

  In the field location type and paste the URL of the Web site

  • retrieve the certificate via the button 'Get certificate '.
  • Click on the "view..." button. "to inspect the certificate in the certificate display

  Check which is the issuer of the certificate.

  You can get more details like the certificate chain in the Details tab of the certificate display.

• This connection is Untrusted

  I get the message below everytime I use Firefox. None of the recommended fixes have worked. I tried to reinstall Firefox but the problem reoccurs. Help! This is the message I get:

  This connection is Untrusted

  You asked Firefox to connect safely to www.google.ca, but we cannot confirm that your connection is secure.

  Normally, when you try to connect safely, sites will present a reliable identification to prove that you're in the right place. However, the identity of this site cannot be verified.
  What should I do?

  If you normally connect to this site without problems, this error can mean that someone is trying to impersonate the identity of the site, and you should not continue.

  This site uses HTTP Strict Transport Security (HST) to specify that Firefox didn't connect safely. As a result, it is not possible to add an exception for this certificate.

  If you cannot inspect the certificate by "I understand the risks", then try this:

  Open the "Add Security Exception" this URL chrome by pasting into the address bar of Firefox and check the certificate:

  • chrome://pippki/content/exceptionDialog.XUL

  In the field of location of this window, type or paste the URL of the Web site.

  • retrieve the certificate via the button 'Get certificate '.
  • Click on the "view..." button. "to inspect the certificate in the certificate display

  You can check details such as the issuer and the certificate chain in the Details tab of the certificate display.
  Check which is the issuer of the certificate.
  If necessary, you can attach a screenshot that shows the display of the certificate.

• I get "this connection is untrusted" on almost every page

  So I had the breakdown and failure of the internet last night because of a rainstorm last night. When I get up to power everything and control the internet, Firefox has become completely crazy!

  I keep getting "this connection is untrusted" on almost every page of Facebook, YouTube and almost all the other sites I've tried. In addition to this I get an opening pop up asking you what Firefox should do with this file? Finally if I add an exception for this site, the page opens, do not know if it is the right term, not coded? No images, text and links.

  I tried uninstalling and reinstalling and that has not worked.
  http://imgur.com/a/hnjjI (mozilla was not the uplaoding my screenshots so I posted the)

  You can check the date and time and time zone in the clock on your computer: (double) click on the clock icon in the Windows taskbar.

  • https://support.Mozilla.org/KB/secure+connection+failed

  You can retrieve the certificate and check details such as WHO issued the certificates and the expiration dates of certificates.

  • Click on the link at the bottom of the error page: "I understand the risks".
  • Let Firefox recover the certificate: "Add Exception"-> "get certificate".
  • Click on the button "View" and inspect the certificate and the Coachman, who is the issuer.

  You can see more details like the intermediate certificates that are used in the Details tab.

  Clear the cache and delete cookies only from Web sites that cause problems.

  "Clear the Cache":

  • Firefox/tools > Options > advanced > network > content caching Web: 'clear now '.

  'Delete Cookies' sites causing problems:

  • Firefox/tools > Options > privacy > "Use the custom settings for history" > Cookies: "show the Cookies".

• "This connection is Untrusted" - my PC clock is correct, but...

  Earlier today, my PC clock set far in the future. I fixed it, don't think anything of it. Currently, he is correct.

  Now, I'm getting the "this connection is untrusted" on each site. If I change the clock from the PC to the INCORRECT date of tomorrow, it will start working again. My BIOS clock is correct.

  The only thing I can think that I did between then Firefox worked last and now install origin. I don't remember if she stopped working immediately after I put the clock to the correct date (I usually work in any other browser except for a few sites-opera, by the way, has no problem).

  I'm puzzled. In addition, if it is relevant, I have literally built this PC yesterday, installs own everything.

  This is the error because the issuer certificate has expired (but it does not give a specific date).

  (Error code: sec_error_expired_issuer_certificate)

  AHA! It was issued by Avast... I have disabled HTTPS scanning and it worked! I don't know why it has any questions, I'll still watch, but for now, I have a solution.

  Thanks for your help, everyone who responded!

• I can open the google Web site but could not find anything (this connection is Untrusted)

  "This connection is untrusted, you asked Firefox to connect to www.google.com, but we cannot confirm that your connection is secure. Normally, when you try to connect safely, sites will present a reliable identification to prove that you're in the right place. However, the identity of this site cannot be verified. What should I do? If you normally connect to this site without problems, this error can mean that someone is trying to impersonate the identity of the site, and you should not continue.

  www.Google.com uses an invalid security certificate.

  The certificate is not approved, because no sender string has been provided.

  You can do a check of malware with several digitization programs of malicious software on the Windows computer.
  Please scan with all programs, because each program detects a different malicious program.
  All of these programs have free versions.

  Make sure that you update each program to get the latest version of their databases before scanning.

  • Malwarebytes' Anti-Malware:
    http://www.Malwarebytes.org/MBAM.php
  • AdwCleaner:
    http://www.bleepingcomputer.com/download/adwcleaner/
    http://www.Softpedia.com/get/antivirus/removal-tools/AdwCleaner.shtml
  • SuperAntispyware:
    http://www.SUPERAntiSpyware.com/
  • Microsoft security scanner:
    http://www.Microsoft.com/security/scanner/en-us/default.aspx
  • Windows Defender:
    http://Windows.Microsoft.com/en-us/Windows/using-Defender
  • Spybot Search & Destroy:
    http://www.safer-networking.org/en/index.html
  • Kasperky free Security Scan:
    http://www.Kaspersky.com/security-scan

  Alternatively, you can write a check for an infection rootkit TDSSKiller.

  • Utility anti-rootkit TDSSKiller:
    http://support.Kaspersky.com/5350?El=88446

  See also:

  • "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked
  • https://support.Mozilla.org/KB/troubleshoot-Firefox-issues-caused-malware

• This connection is Untrusted how fix this?

  OK for the past few days now, I've been making this connection is untrusted on sites like google and facebook and my clock is set right so I have no idea what to do and I also get pages that look like this http://gyazo.com/e6ec92875781ee25ac3bcd3783e08b5f.

  Recently, a common problem is not set up to work with your Firefox security software. Some security suites include a filtering feature. In order to filter secure connections (HTTPS URL), the security software presents a false certificate for Firefox so that it can intercept and stand in the middle of the secure connection. For Firefox to rely on these certificates, you may need to do something like import root certificate, or click an item in the settings of your security software.

  But I'm not aware of Norton that causes this problem, so I'm suspicious that it is something less benign.

  If you have added to the Exceptions, see the section "issued by" on one or two of the exceptions made to learn more about the source of this problem.

  the button Firefox orange (or the Tools menu) > Options > advanced > mini-onglet Certificates > "View certificates" button > Servers tab

  Click on a certificate and use the button display. The type of transmitter, you might find is:

  The name associated with your software security, such as ESET, BitDefender, etc..
  Sendori (indicates Sendori unwanted software)
  FiddlerRoot (shows the unwanted software named similarly to BrowserSafeguard, BrowserSafe, backup)
  Something else
  If you have not added Exceptions, you can click the Add Exception button in the error page, and then in the dialog box, click view certificate or certificate to see issued it by section. You have no need to finish adding an exception.

  What do you see?

  See also

  • https://support.Mozilla.org/en-us/questions/993651?

• You will need to disable the blocking of "this connection is untrusted.

  I don't know what happened, but lately, Firefox has become unusable. I can't even Google maps to work, and it's simply because of the following warning:

  =

  This connection is Untrusted

  You asked Firefox to connect safely to maps.google.com, but we cannot confirm that your connection is secure.

  Normally, when you try to connect safely, sites will present a reliable identification to prove that you're in the right place. However, the identity of this site cannot be verified.
  What should I do?

  If you normally connect to this site without problems, this error can mean that someone is trying to impersonate the identity of the site, and you should not continue.

  If you understand what is happening, you can tell Firefox to start to trust this site identification. Even if you trust the site, this error may mean that someone is tampering with your connection.

  Add no exceptions unless you know there is a good reason why this site uses no identification of confidence.

  =

  Not reliable? REALLY? Maps.Google.com is not approved! Oh, and support.mozilla.org is ALSO not reliable? I use Chrome for this post because in the case of support.mozilla.org, there is no option that allows me to the site.

  Virtually all the sites that I have this problem and Firefox is now all but unusable for me. And I'm on a company computer, is not as if I had a lot of options here. And this isn't our business network, because only a few of us have this problem.

  How can I work again and disable this 'feature' of Firefox?

  Thank you

  Unfortunately, fiddler2 certificates issuer may be a sign of unwanted software on your pc that is to intercept the secure network traffic. go to the system control panel and uninstall programs such as BrowserSafeguard, BrowserSafe, backup or other software that seems suspicious and did not get intentionally installed by you.
  
  _{Reference: https://support.mozilla.org/en-US/questions/982532#answer-520145}

  afterwards, run a full scan of your system with security tools like the free version of malwarebytes & adwcleaner.

  Fix Firefox problems caused by malicious software

• Browser is loading the websites completely, while others are not and others with "this connection is untrusted"

  I've just updated 18.0.1 last night and the problems began immediately. Even this site, I had to leave as an exception then when it loaded it has no color, no menus, etc. What is happening on facebook, some parts of the Amazon, etc. I get "this connection is untrusted" when I try to load gmail, connect to Amazon, trying to load this support page, etc. However I have no problem with google.com, wiki and other sites randomly. I need this problem as soon as possible, I have a deadline for my work and can not open my email to send files.

  I'm tech savvy relativity, but by reading the forum on firewalls and such did not help me. I'm completely lost, panicked and three seconds away just completely wiping my computer.

  Check the date and time of the clock on your computer: (double) click on the clock icon in the Windows taskbar.

  • https://support.Mozilla.org/KB/secure+connection+failed

  What security (firewall, antivirus) software do you have?

  Find out why the site is not approved (see technical details) and if this is due to an intermediate certificate missing then see if you can install the intermediate certificate from another source.

  Some firewalls monitor secure connections (https) and send their own certificate instead of the certificate of the Web site.

  You can retrieve the certificate and check details such as WHO issued the certificates and the expiration dates of certificates.

  • Click on the link at the bottom of the error page: "I understand the risks".

  Let Firefox recover the certificate: "Add Exception"-> "get certificate".

  • Click on the "view..." button. "and inspect the certificate and the Coachman, who is the sender.

  You can see more details like the intermediate certificates that are used in the details pane.

• "This connection is Untrusted" without the option "I understand the risks?

  Dear Sir/Madam:

  I use Firefox (Version 10.0.2) in Mac OS X (Version 10.6.8).

  Now, when I try to log on to my Google account for Google groups, I continue to go to the page with the following message:

  "This connection is Untrusted".
  

  You asked Firefox to connect
  securely to the accounts.google.com, but we cannot confirm that your connection is secure.

           Normally, when you try to connect securely,
  

  sites will present a reliable identification to prove that you
  go to the right place. However, the identity of this site cannot be verified.

           What Should I Do?
  
             If you usually connect to
  

  This site without problems, this error could mean that a person is
  trying to impersonate the site and you should not continue.

           [Get me out of here!] Button        
  
           Technical Details
           accounts.google.com uses an invalid security certificate.
  

  The certificate will be more valid until 2011-07-20 20:00. The time now is 2011-03-02 12:20 AM.

  (Error code: sec_error_expired_certificate) »
  

  There are two problems here: 1) two times listed are all passed; 2.) I n ' have the option "I understand the risks".

  I have used Firefox for a long time and you have the problem just today.

  What can I do maybe?

  Thank you!

  Mauricio: I just solved the problem. For some unknown reason, my system time regained a year 2011, although the month and date are always accurate, and at first I missed somehow the wrong year. I just adjusted the year and now everything seems to be okay.

  Thank you!

• All the sites SSL Web I visit displays the message "this connection is untrusted" and shows me a false SSL certificate for a different domain name.

  When I visit a Web site that requires SSL I displays the message "this connection is untrusted". Any Web site that I visit, it's always exactly the same message and the same SSL certificate that she is no longer valid for www.thawte.com

  support.Mozilla.org uses an invalid security certificate.

  The certificate is not approved, because no sender string has been provided.
  The certificate is valid for www.thawte.com
  The certificate expired on 11/11/2011 23:59. The time now is 11:46 28/01/2012.

  When I click "Add the Exception" on a Web site and view the certificate, it is exactly the same certificate with the exact same serial number.

  I had a similar problem with Internet Explorer showing a 404 error when I visited SSL protected pages but to do a restore of the system a month ago to correct this. All other bowsers are / were very good.

  I installed Firefox 3.x month last to test something that is when the problem started. I have since uninstalled Firefox 3.x and reinstalled the latest version. I deleted all the preferences/settings, disabled modules and reinstalled many times. I did a Windows system restore to before that the problem started with no luck.

  The time / Date on my computer are correct. I have no firewall other than the windows one. I had no antivirus (netbook) until I installed a (Avast) yesterday to see if a virus was causing issues (found nothing). This problem arises on any internet connection (tested to work and home).

  Try bypassing the caveat

  or try to use the module Skip Cert error (to jump to the SSL/TLS certificate error page)

  Thank you

  Please check 'Resolved' the answer really solve the problem, to help others with a similar problem.

• Firefox won't open Google without a mistake "this connection is untrusted", and no option to obtain a temporary certificate is available.

  This problem arose for the first time a few months ago. but I managed to work around it by clicking on "I understand the risks" on the warning page "this connection is untrusted", then adding a security exception. This fix would work for the lengths of time, sometimes for days, sometimes for minutes. Now, after upgrading to the latest version of Firefox, I get the same caveat of security, but the option to click on "I understand the risks" disappeared. I get this error message on the page of technical details: (error code: sec_error_unknown_issuer)

  I have everything listed here repeatedly made: https://support.mozilla.org/en-US/kb/connection-untrusted-error-message
  I tell everything. Remove cert.db, start in safe mode, clear the cache, delete and reinstall... Nothing works.

  Your help would be greatly appreciated!

  In Firefox, you must import into the authorities. The certificate will generally have a .cer extension.

• Why isn't the exception, I add when I get this connection is untrusted error work?

  I recently started getting "this connection is Untrusted' errors every time I connect to google." Although there is a response describing the problem, I have the solution DOES NOT WORK. Not at all. I added google as an exception, many times, but I still get the same error. Since it doesn't seem to be what I can do in the settings options to confirm that I have indeed added it completely, I want to know why I still keep getting this message despite having already added the site to my exceptions?

  Since you are using Kaspersky, could test you with the disabled HTTPS connection filtering if Kaspersky is the culprit? This should be in the application Kaspersky itself, not in the Firefox Add-ons:

  Settings > others > network

  Uncheck the box for "numerical analysis of connections.

  http://support.Kaspersky.com/images/kis2015_11159_0913-242527.PNG
  http://support.Kaspersky.com/images/kis2015_11144_1813-242648.PNG

• Please help (IN NON-GEEK SPEAK!) «This connection is untrusted you asked Firefox to connect safely to my.ferris.edu, but we cannot confirm that your c...»

  "This connection is Untrusted".

  You asked Firefox to connect safely to myfsu.ferris.edu, but we cannot confirm that your connection is secure.

  Normally, when you try to connect safely, sites will present a reliable identification to prove that you're in the right place. However, the identity of this site cannot be verified.
  What should I do?

  If you normally connect to this site without problems, this error can mean that someone is trying to impersonate the identity of the site, and you should not continue. »

  
  

• This connection is untrusted error

  Trouble with my Mac or Mozilla. I get the "this connection is untrusted" on 3/4 of the sites I visit during a session on the internet. I did so that I have to use SSL 3.0 and TLS 1.0 protocols of use checked.

  I could have removed some security certificates or to add some right modules before, I noticed the error message.

  Anyone have any ideas?

  Thank you.

  see this article...

  "This connection is Untrusted" error message - what to do

  ... and let us know if this helped.