hello vze2mp9g, please make sure that you sytem's date & time is set correctly: "This Connection is Untrusted" error message appears - What to do

I set the time and date correctly on time.nist.gov via windows 7 time. Did not work. I deleted the cert8 file as suggested in the answer, did not work. Here is a screenshot of my about:addons

<a href="http://www.imagebam.com/image/de92c6269697869" target="_blank"></a>

If you need any other information, I will be gladly attempt to get it to you. I tried this under Beta and Release Candidate, both versions had the same problem. Thanks You David

Hi David, if you expand the Technical Details section, does that further explain the reason the certificate isn't being accepted?

That site does use a slightly unusual certificate, in that it covers 4 different domains. This one is in the Alternate Name field, it's not the main domain, but Firefox still should be able to handle it...

Regarding the strange message on mozilla.org, it implies that the site did not receive your Firefox 23 user agent string. I have a test page here where you can see what user agent string is received from your Firefox: https://jeffersonscher.com/res/jstest.php

You wouldn't believe this, but today when I came home from the hospital (my mother has been in the hospital for two weeks come this Monday), and just before I went to check my e-mail, my home page is set to about:home, I decided to click on Add-ons, and it was as though an angel came down and fixed what ever was wrong, and I no longer had that problem. I couldn't ever reproduce that program if I tried.

I just want to thank you for showing me where to start looking to trouble shoot the problem. Any ways, this is the export of that certificate:

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

BTW, if you can explain to me how this correction occurred, I would really appreciate it very much because since I've always had a computer since 1983, I know that computer problems don't fix themselves.  :) Thank You again. David

Thank you again for showing me another tool to trouble shoot Firefox when it's not acting the way it's suppose to. You have been very valuable to me with this problem. I'm enclosing a screen shot of the link you gave me. If you see anything unusual, I would welcome any and all feedback.

https://support.cdn.mozilla.net/media/uploads/images/2013-08-10-19-28-46-5afd60.png

Last question. How did you included a screen shot of the window in firefox? I tried to upload my screenshot, but it didn't come out like yours. What's the "magic trick" secrete?  :)

Okay, I lied. I was able to reproduce this error. When I went to create a NEW profile (firefox.exe -profilemanager), (Test-Profile), and used it, I received the exact same errors. I followed your instructions for trouble shooting. This is the certificate for addons.mozilla.org:

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Then I went to  https://jeffersonscher.com/res/jstest.php  and this is the results of that page, in text format:

Download: Fast, Fun, Awesome <//affiliates.mozilla.org/link/banner/35346>

 Information About Your Browser

Your browser supplies the following information to sites about itself. This is not a comprehensive list of all information available to the page.

   Data from HTTP Headers

Your browser's request includes the following data:

• Browser "User Agent" string*: Mozilla/5.0 (Windows NT 6.1; rv:23.0)

Gecko/20100101 Firefox/23.0

• Your public IP address*: 98.110.119.136 (REMOTE_ADDR)
• Referring page (if any)*:

/Full HTTP Request Headers:/ Host: jeffersonscher.com User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:23.0) Gecko/20100101 Firefox/23.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate DNT: 1 Connection: keep-alive

   JavaScript Browser Tests

     navigator object properties

Scripts in web pages can check various properties of the navigator object. This information can be blocked or overridden by the user.

navigator.userAgent = Mozilla/5.0 (Windows NT 6.1; rv:23.0) Gecko/20100101 Firefox/23.0 navigator.appName = Netscape navigator.appCodeName = Mozilla navigator.appVersion = 5.0 (Windows) navigator.platform = Win32

Active plugins (navigator.plugins collection):

 * Name (Version): Shockwave for Director (12.0.3.133)
   Description: Adobe Shockwave for Director Netscape plug-in, version
   12.0.3.133
   File name: np32dsw_1203133.dll
 * Name (Version): Microsoft Office 2013 (15.0.4509.1000)
   Description: The plugin allows you to have a better experience with
   Microsoft Lync
   File name: npMeetingJoinPluginOC.dll
 * Name (Version): Silverlight Plug-In (5.1.20513.0)
   Description: 5.1.20513.0
   File name: npctrl.dll
 * Name (Version): Adobe Acrobat (11.0.3.37)
   Description: Adobe PDF Plug-In For Firefox and Netscape 11.0.03
   File name: nppdf32.dll
 * Name (Version): Adobe Acrobat (11.0.3.37)
   Description: Adobe PDF Plug-In For Firefox and Netscape 11.0.03
   File name: nppdf32.dll
 * Name (Version): Microsoft Office 2013 (15.0.4420.1017)
   Description: The plugin allows you to have a better experience with
   Microsoft SharePoint
   File name: NPSPWRAP.DLL

     DOM object detection: objects/methods/collections

As a more reliable indication of a browser's capabilities, scripts can check for the existence of various objects and properties:

if(document.getElementById) = true; // all modern browsers support this method if(document.layers) = false; // this collection identifies Netscape version 4 only if(document.all) = false; // this object works in IE4-8 and emulations thereof

Copyright © 2013 Jefferson Scher. Updated 6/7/2013.

I am not a programmer or even a script writer, so a lot of this information is unknown to me. Hopefully, you or someone might be able to see what's going on with Firefox on my system.

One last note, I'm going to install an older ( a month or two) version of Firefox to see if I get the same problem. I would really appreciate any and all feedback concerning this matter. Thank You. David

Hi David, unfortunately I don't know how to convert those long certificate strings into English...

If you expand the Technical Details section, does that further explain the reason the certificate isn't being accepted?

To view the actual certificate, I believe you have to start the process of adding an exception. Expand the I Understand the Risks section, click the Add Exception button, then click View to capture a screen shot similar to the one I posted. (Then you can cancel our rather than save the exception.)

Note: I usually capture screen shots using Alt+PrintScreen, paste them into Windows Paint, then save in PNG format. Then I attach them to a reply using the Browse button below the post area.

Hi,

  Sorry I haven't been here allot, but I created a NEW profile via firefox -profilemanager. I still get an error when ever I go to addons, and even this support page. This is the error I am getting:

Error Code: (sec_error_unknown_user)

Then I went to this support page,and I get a similar problem, I add the exception: https://support.cdn.mozilla.net/media/uploads/images/2013-08-15-07-28-25-ffb976.png

and when I came to this page, all the html was unable to display:

https://support.cdn.mozilla.net/media/uploads/images/2013-08-15-07-29-03-89ac33.png

I hope that the little added information and screenshots will help you help me with this strange and odd problem. I really appreciate the time and effort you've given me for trouble shooting this problem. Thank You. David

from your first screeenshot, please also click on certificate status - view... and make another screenshot of the window that opens afterwards - this will give more clues!

Check out why the site is untrusted (click "Technical Details to expand that section) and if this is caused by a missing intermediate certificate 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.

Note that some firewalls monitor secure (https) connections and send their own certificate instead of the website's certificate.

• ESET setup -> advanced setup -> extend web and email tree -> SSL
• SSL protocol: Do not scan SSL protocol

I cleared everything of my computer related to FF, then I did a clean install and used the default user. Had no problem. When I originally came here to reply what happened, I went to POST REPLY, and I received the same error, I closed FF 24.0b3, restarted FF, and I still had the problem. I wiped my pc of all ff and did a fresh install. I'm replying using FF now. I'm afraid to POST REPLY, here goes nothing. David

Okay, the post above, I didn't get the problem. As I was attempting to reply to the above reply, I clicked on POST REPLY, and the problem was back. I am using IE 10, which I DO NOT LIKE USING. I am a Firefox user for life.

Any suggestions? What can I do next?

Screen shot below. HELP, I'm frustrated......

https://support.cdn.mozilla.net/media/uploads/images/2013-08-17-18-47-11-9ddacf.png

I don't understand what this means:

•ESET setup -> advanced setup -> extend web and email tree -> SSL •SSL protocol: Do not scan SSL protocol

Is this a program within Windows 7 Ult SP1 32-bit? Thank You.

Okay here is the certificate for services.addons.mozilla.org

https://support.cdn.mozilla.net/media/uploads/images/2013-08-17-18-57-48-59b120.png

thanks for posting back with the screenshots requested - hopefully we're now one step closer to sorting this issue. the sceenshots show that the certificates are issued by a software named sendori which is intercepting your connections. please try if you can uninstall it in the windows control panel > programs section. when searching for it on the web it is also often referred to as malware, so you might have to use one of the security tools recommended in the following article to scan your system and get rid of sendori: Troubleshoot Firefox issues caused by malware

Sendori support articles that might be useful:

• How do I remove, turn off, or uninstall Sendori? : Sendori Support - Windows Control Panel
• No Internet access after installing or uninstalling the Sendori application : Sendori Support - How to remove DNS servers the application added to your network connection
• How to clean the Registry after uninstalling the Sendori application : Sendori Support - More difficult way to remove the DNS servers if the above doesn't work

Note: Instead of removing Sendori, if you find this software useful and the company trustworthy, you could globally trust their certificate. However, at this point, I don't recommend it. I can't find any documentation on why it's necessary to prevent you from visiting questionable sites (the purpose of the Sendori software) or how the software ensures your security on HTTPS connections.