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Search on Google sometimes doesn't work

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In the past few days every now and then when I use the firefox bar to make a search firefox tells me that it can't build a secure connection with google.com. Basically firefox doesn't trust www.google.com. I can't update a screenshot because right now it isn't happening.

In the past few days every now and then when I use the firefox bar to make a search firefox tells me that it can't build a secure connection with google.com. Basically firefox doesn't trust www.google.com. I can't update a screenshot because right now it isn't happening.

Όλες οι απαντήσεις (9)

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What are the exact error message(s) ?

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Sorry if I kept you waiting but the error took a little while to pop up again. Here it is.

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Hi richiba00, if you click the Avanzate button, what is the error code? Usually it is in all caps with underscores: SEC_ERROR_SOMETHIING

This article describes various common causes for various of the errors, but since you get this intermittently, it sounds suspicious:

How to troubleshoot security error codes on secure websites

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The error in this instance is SEC_ERROR_UNKNOWN_ISSUER. Also I get errors only using Firefox and not others browsers, I tried Chrome and Edge for at least a couple days and they worked just fine.

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richiba00 said

The error in this instance is SEC_ERROR_UNKNOWN_ISSUER.

When you are getting the error, that code is a "link" that reveals a coded version of the rejected certificate. You can copy/paste that here and a support volunteer will decode it, or you can use an online decoder. The critical thing usually is the Issuer.

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jscher2000 said

richiba00 said
The error in this instance is SEC_ERROR_UNKNOWN_ISSUER.

When you are getting the error, that code is a "link" that reveals a coded version of the rejected certificate. You can copy/paste that here and a support volunteer will decode it, or you can use an online decoder. The critical thing usually is the Issuer.

Here is the certificate

https://www.google.com/

L’autorità emittente del certificato del peer non è stata riconosciuta.

HTTP Strict Transport Security: true HTTP Public Key Pinning: true

Catena di certificati:


BEGIN CERTIFICATE-----

MIIDcjCCAlqgAwIBAgIQUlfwcUU2kKdBwZpbM5kcozANBgkqhkiG9w0BAQsFADAj MSEwHwYDVQQDDBhEaWdpQ2VydCBHbG9iYWwgUm9vdCBHMUEwHhcNMTkwMjA5MTM1 MTUwWhcNMzAwMjA5MTQ1MTUwWjAZMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTCC ASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANKxMQwxWYP0mJbNR6G4tn12 0/RtHYGcPJL3gMTvLh8HYnKwFUyM3DE4uH0IQssH0hrQ8h9gfMnksUYhiMofYLbx ZTeMi0AqXW9EbeleiE5t6/pf2SepLNY+oZ1ECSb73IlQaHRwVSDMrhJ1vqGVmKMf TsqVg+qSe5ssW0ZDuvapbWA6i2UhpSo0JHGsUrkz0rnBN4EJE5HLEhu0lRZzDaZV FfQCZ1vYqTLmifvaDjNiXmK9PVUGkARTiRfV3p7QO/ky/zU/ribBucgzdvtW+775 GdbnTLBoDo3cRLYgrb0cOKB+y5iTasCyMkcB1gwCVXjin35CyuMpBkrtTJDEU0kC AwEAAaOBqzCBqDATBgNVHSUEDDAKBggrBgEFBQcDATAMBgNVHRMBAf8EAjAAMA4G A1UdDwEB/wQEAwIFoDAzBgNVHREELDAqgg53d3cuZ29vZ2xlLmNvbYIMKi5nb29n bGUuY29tggpnb29nbGUuY29tMB8GA1UdIwQYMBaAFA5Ah2XqPg9Gj1wwNQuV3ci6 Tis6MB0GA1UdDgQWBBRrdq26qjo6hW9bTlaAdKV0ZbhpRDANBgkqhkiG9w0BAQsF AAOCAQEAIHRwIfyXb6h/BwlCR+Aizbozyfm44N0OHeS52FQNafV+rrk8ArSa0oxq 07X58hqHuaeWvRTMoRBsE5QJi9FulQpHKJQXimRCtqHwIdwXrbsGDFLNFw/SLpUb EbMCBjY1Mi+Pk4Ljf6zgSNuoPqtXCfkrKwc32hihlhR2+OaaedBBosrH+YgDqDGR DN/tpkAsT9aPzkBFD5S7PJCnLpe+WX7MppDKXqBpN8nhLj1AiOXM2kKQp0s0bcFF F6hyMCHXObPQ2augfDQBuQzk+eMPwCe+2WwXOBi7vz/FWMCr8aAWF7KhPuCJ5IQw LBtlHi6jLiMa222m5zXcOcZIDJt+vQ==


END CERTIFICATE-----
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Hmm, that doesn't match the one I get. The reported issuer is:

DigiCert Global Root G1A

while the one I get has this issuer:

Google Trust Services

and the upstream issuer is GlobalSign, not DigiCert.

So I suspect a "man in the middle" is attempting to use a fake certificate to monitor your searches, but I don't yet have a lead on what is behind it.

Do you notice the problem during certain times of day, or after other events on the computer? Any pattern to it?

I don't know whether you have a preference, but does google.it work?

https://www.google.it/search?q=firefox

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The firste time I noticed this google.it worked, now it doesn't. I didn't noticed if the error occurs after a particular event but I'm sure it showed up only between 6 PM and 12 AM CET.

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Perhaps it would be worth running some malware scans. The following article lists tools that are free or have a free trial:

Troubleshoot Firefox issues caused by malware