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Firefox is claiming many sites are unsecure even Mozzilla.Org and Google.com qualify as 'at risk' sites.

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  • Impendulo yokugqibela ngu angel101192

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So I re-downloaded FireFox for my Windows 8 computer when it came back from the shop and I have found the

This Connection is Untrusted

You have asked Firefox to connect securely to support.mozilla.org, 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.

Message on many sites including, Google.com Netflix.com and even your help site. In addition, the Exception list will not stay intact after exiting out of the web browser and returning back into it.

Someone posted something about a 'magical button' under the Help section and that was something I couldn't find. I did attempt to find the button that the person had mentioned but I failed to locate it. Considering I didn't have this issue before I downloaded this new version made for Windows 8, I think it might be part of a security flaw. I also recall under... well, somewhere, that the websites with "https://" are the ones that are typically blocked. This might be a setting that should be changed within your whole system because it even prevents people (or at least scares people) from wanting to visit the site in worry it is a false one.

Hopefully I can find an older version of FireFox somewhere that isn't made specifically for Windows 8 so I can avoid this issue completely. If anyone has any suggestions on how to fix this I'd like to know.

So I re-downloaded FireFox for my Windows 8 computer when it came back from the shop and I have found the This Connection is Untrusted You have asked Firefox to connect securely to support.mozilla.org, 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. Message on many sites including, Google.com Netflix.com and even your help site. In addition, the Exception list will not stay intact after exiting out of the web browser and returning back into it. Someone posted something about a 'magical button' under the Help section and that was something I couldn't find. I did attempt to find the button that the person had mentioned but I failed to locate it. Considering I didn't have this issue before I downloaded this new version made for Windows 8, I think it might be part of a security flaw. I also recall under... well, somewhere, that the websites with "https://" are the ones that are typically blocked. This might be a setting that should be changed within your whole system because it even prevents people (or at least scares people) from wanting to visit the site in worry it is a false one. Hopefully I can find an older version of FireFox somewhere that isn't made specifically for Windows 8 so I can avoid this issue completely. If anyone has any suggestions on how to fix this I'd like to know.

Isisombulu esikhethiweyo

Usually you would find Sendori in the Windows Control Panel, Uninstall a Program, but its certificate might have been hijacked by malware. For example, if you are not a web developer who installed the Fiddler debugging proxy program, the FiddlerRoot certificate usually turns out to have been installed by something named BrowserSafe, Browser Safeguard, or Safeguard. Do you have any unrecognized entries in the control panel that could have snuck in as part of a bundle?

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All Replies (16)

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Date and time correctly set?

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oh beat me to it just lol ^^

Hi angel it certainly sounds like your Firefox is behaving in an unusual way, here is a page which deals with the kind of issue you are describing:

https://support.mozilla.org/en-US/kb/connection-untrusted-error-message

Given that your receiving the error so frequently i think it may that your system date is incorrect.

if its not, the next time it happens can you click the "technical details' option when you get the error and post what it says here to give us some more information.

Ilungisiwe ngu Nick_Adamson

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If you are referring to my computer system as a whole, yes my time and date are correct. If you are referring to something to do with the inside programing of FireFox than no, I have no idea how to even check something like that; and believe me, I've looked.

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Additional information from the "Technical Details" When loading Mozilla.org I get this: www.mozilla.org uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)

Attached is a screenshot of what I see when I try to use Google.

I did find "Internet Time Settings" under my Time and Date section in my computer and the internet time settings are synced to my laptop which is correct.

Ilungisiwe ngu angel101192

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The results after doing the suggested "Reset Firefox" from the help section after deleting the cert8 from the profile as instructed by the directions for the Unknown error (like what I am getting); the above problem is still happening with listed sites (again sites with "https://"). Attached to this is the full messages for both Mozilla and Netflix.

Ilungisiwe ngu angel101192

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[can't delete this box]

Ilungisiwe ngu angel101192

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I experience same thing as you before. I just click "ADD EXCEPTION" to allow google site run in my Firefox. You don't have to worry. It was part of Firefox security.

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I would agree that it would fix the issue but it doesn't permanently fix it (even with the box checked). Meaning when I close out firefox and reopen it, it still says it's an at risk site. This never, never happened with the older version.

Attached is another screen shot with the information. Hopefully this is something that can be fixed, especially the permanent exception not working. Any thoughts anyone?

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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.

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cor-el, if you see the screenshots I've posted, I tried the list you gave me and still to no results :(

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You appear to have installed software at some time in the past that included Sendori.
Always be cautious and check that you aren't installing unwanted extras.

You can check the Windows Control Panel to see if Sendori shows there and uninstall this software.

  • Control Panel > Programs > Programs and Features > Uninstall or change a program
  • Click the Installed column to sort by this heading

See also:


Do a malware check with several malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.
All these programs have free versions.

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

You can also do a check for a rootkit infection with TDSSKiller.

See also:

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Sendori or FiddlerRoot are not on my computer, I searched as well as checked my downloaded programs... and I tried to get TDSSKiller from the link you gave me but there's no download on there; it just information and there's no trail download for TDSSKiller under their "Trails/Downloads" Section. And Windows Defender is up to date.

I'm stumped.

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Did you check your firewall rules? To access secure sites, Firefox needs to talk to another part of itself via TCP through the localhost address.

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finitarry how would I check that with Norton? And what exactly would I be looking for?

Ilungisiwe ngu angel101192

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Isisombululo esiKhethiweyo

Usually you would find Sendori in the Windows Control Panel, Uninstall a Program, but its certificate might have been hijacked by malware. For example, if you are not a web developer who installed the Fiddler debugging proxy program, the FiddlerRoot certificate usually turns out to have been installed by something named BrowserSafe, Browser Safeguard, or Safeguard. Do you have any unrecognized entries in the control panel that could have snuck in as part of a bundle?

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I finally got it when I went to look for things I hadn't uploaded onto my computer. It turned out to be the Pureleak program which said all it did was give me promoted discounts to pages. But after deleting that it cleared up my Firebox blockage. It was a weird one however, it didn't even the certificate that I had ordered for Google stay permanently even though I had the box check marked. Thank god I had a factory restart done on my computer before this issue happened because I would have never found it in all my junk, thank you!!!!