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I can't access any site - This connection is untrusted

  • 8 replies
  • 6 have this problem
  • 3014 views
  • Paskiausią atsakymą parašė SlamGouveia

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I always could access every sites I wanted until Firefox 26.0 Version. Starting then, i can't access any site. I can't even do recherches on google, I can't access facebook. I can't even access Mozilla Support. I had to install Firefox 25 to make this post. I'm going to post a screenshot with the error's details: http://gyazo.com/004f051dd9cc7ee9806b9c40e7a038ff.png

Hope you can help me, Thanks

Chosen solution

Problem Solved. I saw other people having the same problem and i ran the malware detector and now I can use Firefox without problem.

Thanks all of you

Skaityti atsakymą kartu su kontekstu 👍 0

All Replies (8)

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Modified by Diego Victor

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hello SlamGouveia, could you tell us which issuer information the certificate does contain when you inspect it (see screenshot)?

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ok, then i'd try to reset firefox and see if this can address the issue...

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Did you try to click the Get Certificate button?

That should make the View button active.

Modified by cor-el

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Already reseted, everything is still the same. Yes, cor-el, the print I made was exactly after clicking the Get Certificate button

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Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test to see if that helps.


Do a malware check with some 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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Chosen Solution

Problem Solved. I saw other people having the same problem and i ran the malware detector and now I can use Firefox without problem.

Thanks all of you