Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

SEC_ERROR_UNKNOWN_ISSUER

  • 5 replies
  • 3 have this problem
  • 29 views
  • Last reply by TyDraniu

René Simonpietri
René Simonpietri
more options

Dear Mozilla I have encountered the "SEC_ERROR_UNKNOWN_ISSUER" error when trying to access google.com Unfortunately, Mozilla Support sites only explain the origin of the problem. No solution to solving the issue is given. I can't even proceed to the website accepting the risk. I have found other pages with suggested solutions but none worked. I tried deleting the Cert9.db file which didn't work. Other solution are for antivirus on windows which doesn't help since I run Ubuntu with no antivirus. I'd greatly appreciate any help. Thx in advance

Naked88r

Dear Mozilla I have encountered the "SEC_ERROR_UNKNOWN_ISSUER" error when trying to access google.com Unfortunately, Mozilla Support sites only explain the origin of the problem. No solution to solving the issue is given. I can't even proceed to the website accepting the risk. I have found other pages with suggested solutions but none worked. I tried deleting the Cert9.db file which didn't work. Other solution are for antivirus on windows which doesn't help since I run Ubuntu with no antivirus. I'd greatly appreciate any help. Thx in advance Naked88r

All Replies (5)

TyDraniu
TyDraniu
  • Top 25 Contributor
more options

Can you click Advanced -> Show certificate on that page and paste here the certificate?

René Simonpietri
René Simonpietri Question owner
more options

https://www.google.com/

Peer’s Certificate issuer is not recognized.

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

Certificate chain:

BEGIN CERTIFICATE-----

MIIEATCCAumgAwIBAgIQXJZLZ9my/T6rK/dDD1isujANBgkqhkiG9w0BAQsFADCB ijELMAkGA1UEBhMCVVMxEzARBgNVBAgTCkNhbGlmb3JuaWExFTATBgNVBAoTDFpz Y2FsZXIgSW5jLjEVMBMGA1UECxMMWnNjYWxlciBJbmMuMTgwNgYDVQQDEy9ac2Nh bGVyIEludGVybWVkaWF0ZSBSb290IENBICh6c2Nsb3VkLm5ldCkgKHQpIDAeFw0x OTAzMjMxNTA1MjJaFw0xOTA0MDYxNTA1MjJaMGgxCzAJBgNVBAYTAlVTMRMwEQYD VQQIDApDYWxpZm9ybmlhMRYwFAYDVQQHDA1Nb3VudGFpbiBWaWV3MRMwEQYDVQQK DApHb29nbGUgTExDMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTCCASIwDQYJKoZI hvcNAQEBBQADggEPADCCAQoCggEBAMpsPKQfaYrZupZymZg0XZsIAYu9CIwOucA/ bxKK5wxPlXQZk2EWX7+7zYSfjR6Gjgrf6+XyZMjqQUCysGoE03vTAp10zxQQgbJy Cc2ndw1RWrL/8hj+6afZ7Ql3EDcQ70O6o9U1mNoHbU5yMpoDIOvSYlOkyBGZ34Q1 zvGkfSGgw7DgjMYxF9CGgthSlmTUfE3Mqup0pRODJnvE1mIVIFGN4ZqTJbXkxlFT 6M+lXhnWA1XzmwigXpYL818DDTMn2lsuHKXwtK1UYDI/JBDy7YNtvm87dlQyUi/8 q5j48ZVKGUT3lIPdAkyGniut7Fz/E/pk4HlSv1yvvX5cjc1ekQkCAwEAAaOBgzCB gDATBgNVHSUEDDAKBggrBgEFBQcDATAZBgNVHREEEjAQgg53d3cuZ29vZ2xlLmNv bTAMBgNVHRMBAf8EAjAAMEAGA1UdHwQ5MDcwNaAzoDGGL2h0dHA6Ly9nYXRld2F5 LnpzY2xvdWQubmV0L3pzY2FsZXItenNjcmwtLTQuY3JsMA0GCSqGSIb3DQEBCwUA A4IBAQC7ROnc6kg9H/9hwxpbhIh5L8o2L45f1whdaKiT/TLrBkxdolVYXdD7foee imbsP86X++Xzg9UM4TaUq4XqnFFbsjUEYKaeLRWUDw8ZYp1g89ZvgQXRqdLzX1IS 70zqQnux6vFm2fsLkUaqq6BXtXcjEAa87RZ4vMsEfxf5sBOvDLyZbP9s9A5+rA7M hi7kc6jp6WCFd/TCQTJz4Ws6yBtVNAH0jVoYSCRY0h0fXWNgsGBaVz6xcPp8jhD6 mlutMvFszQuRdNiCIRyQvWJN7O99KDx4dXGJ5JRSzKoNkfatIOeXiDQUAVc/r/TF QQpwCKQVT5+U38gdfdZ7x+DvVIyT

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

MIID9TCCAt2gAwIBAgIEXJZLMTANBgkqhkiG9w0BAQsFADCBqTELMAkGA1UEBhMC VVMxEzARBgNVBAgTCkNhbGlmb3JuaWExFTATBgNVBAoTDFpzY2FsZXIgSW5jLjEV MBMGA1UECxMMWnNjYWxlciBJbmMuMTMwMQYDVQQDEypac2NhbGVyIEludGVybWVk aWF0ZSBSb290IENBICh6c2Nsb3VkLm5ldCkxIjAgBgkqhkiG9w0BCQEWE3N1cHBv cnRAenNjYWxlci5jb20wHhcNMTkwMzIzMTUwNTIyWhcNMTkwNDA2MTUwNTIyWjCB ijELMAkGA1UEBhMCVVMxEzARBgNVBAgTCkNhbGlmb3JuaWExFTATBgNVBAoTDFpz Y2FsZXIgSW5jLjEVMBMGA1UECxMMWnNjYWxlciBJbmMuMTgwNgYDVQQDEy9ac2Nh bGVyIEludGVybWVkaWF0ZSBSb290IENBICh6c2Nsb3VkLm5ldCkgKHQpIDCCASIw DQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMpsPKQfaYrZupZymZg0XZsIAYu9 CIwOucA/bxKK5wxPlXQZk2EWX7+7zYSfjR6Gjgrf6+XyZMjqQUCysGoE03vTAp10 zxQQgbJyCc2ndw1RWrL/8hj+6afZ7Ql3EDcQ70O6o9U1mNoHbU5yMpoDIOvSYlOk yBGZ34Q1zvGkfSGgw7DgjMYxF9CGgthSlmTUfE3Mqup0pRODJnvE1mIVIFGN4ZqT JbXkxlFT6M+lXhnWA1XzmwigXpYL818DDTMn2lsuHKXwtK1UYDI/JBDy7YNtvm87 dlQyUi/8q5j48ZVKGUT3lIPdAkyGniut7Fz/E/pk4HlSv1yvvX5cjc1ekQkCAwEA AaNCMEAwHQYDVR0OBBYEFIW/Ooar1CAv9lVZwOuUSDjeYbjbMA8GA1UdEwEB/wQF MAMBAf8wDgYDVR0PAQH/BAQDAgH+MA0GCSqGSIb3DQEBCwUAA4IBAQAE7MNGk7uV Am86Wv9Iut8CLPrEe2nFaBk2hyQFK67fzQhFYnRcaSBoTUXdyrfE79X97O4/3IV/ /LV+4Ys/suDYRkYZEJmF5s5wzcXS2fMa0k39qIKOvUK2fRWnvWFbh0mF4PNmaBbP gklt/Z5Ph9AfDxyzSJS/2e8LbZfW8iLqmbT72eTZ61/0X9nM3yhUKUtxnKdZ+Hlg WWFToD0sBHcOK1ibteUIUxaX/NFvK0gggFGM+er3E1bmUN6Y1YbolSH4z99eq7eI SeggN/Vjy4cbLyNJ0wMJggGWA76b3rkklVgbC1AGrCwN8FtCItA1wU17nEXDUJxw Y3uCW0kgi7C7

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

MIIEBDCCAuygAwIBAgICd3owDQYJKoZIhvcNAQELBQAwgaExCzAJBgNVBAYTAlVT MRMwEQYDVQQIEwpDYWxpZm9ybmlhMREwDwYDVQQHEwhTYW4gSm9zZTEVMBMGA1UE ChMMWnNjYWxlciBJbmMuMRUwEwYDVQQLEwxac2NhbGVyIEluYy4xGDAWBgNVBAMT D1pzY2FsZXIgUm9vdCBDQTEiMCAGCSqGSIb3DQEJARYTc3VwcG9ydEB6c2NhbGVy LmNvbTAeFw0xNTAxMDYyMjM2MTFaFw00MjA1MjMyMjM2MTFaMIGpMQswCQYDVQQG EwJVUzETMBEGA1UECBMKQ2FsaWZvcm5pYTEVMBMGA1UEChMMWnNjYWxlciBJbmMu MRUwEwYDVQQLEwxac2NhbGVyIEluYy4xMzAxBgNVBAMTKlpzY2FsZXIgSW50ZXJt ZWRpYXRlIFJvb3QgQ0EgKHpzY2xvdWQubmV0KTEiMCAGCSqGSIb3DQEJARYTc3Vw cG9ydEB6c2NhbGVyLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB AMBFIGBDTHjqIMBdrqeWoG9VB9wi0TBHCXkE0Hrj2ug2hrT8FiJhQntW5kXnzmfe HM2MPQV6dLeQ9vpPX0gehTHZyhM3Z24V6yKRpJYr79KDwSbrtYTrFwGcVsO2aFP6 /YS10MfJn5hRYDOGnQi+NbnFg/u/2c6be/BRsMNvT3R2pBm+dOaoqbvnJMo1SNz2 5RJC2rZ6WaS9y/o4tvJWohp1Ldhss8pzLLuyiB2nbHiouPZ8fymhStOJMQfab21N pOfqJPO+BiuEV88xYOkFvXHOL6UXhQ7rDQ/mxskwZteJj4l5oUvE+U0tjpdtJI4L AYTn/jy/mgxNWbDQVqqPk1cCAwEAAaM8MDowHQYDVR0OBBYEFIjA8eY/bmcEpkmt hk4IVRE8FK7rMAwGA1UdEwQFMAMBAf8wCwYDVR0PBAQDAgH+MA0GCSqGSIb3DQEB CwUAA4IBAQBN2YpxKTt37zbIFsSkdexLX15Edh+RFw57lIar/uHZ4EgnAmOJ/8DP EE09zSml31v78CMtE6xgUOsKg41k27DAsnk3rlywyniOoYMhTiiuw49xAMQ/KaSX CJuaOOJAnCVXc7pKFFqkF1QF+Skw36hGJaackBY9dQhuCPuw2Tg8sIzOi7v94Nrw C7NZAa4Cr3gWFiYkzVgDhmhoUR2UqZdStwHu2b4Ksro2OMllpWXE3k4rZgow3eBE LG1zF85OOTypgX/cYElYCdZViRJJyPupcPsHViMNIbQ7IBKOENGZsCipV/UJZiZI 6inggEPaaPEtF/3X+QdksYP7Wg643zF7

END CERTIFICATE-----
TyDraniu
TyDraniu
  • Top 25 Contributor
more options

Issuer of this cert is not Google, but: Zscaler Inc.

René Simonpietri
René Simonpietri Question owner
more options

Thank you for replying but how do I use this Information? I'm happy to follow a guide if there's any.

TyDraniu
TyDraniu
  • Top 25 Contributor
more options

See the following urls: https://support.mozilla.org/questions/1199797 https://help.zscaler.com/zia/how-do-i-deploy-zscaler-certificate-mozilla-firefox-browsers https://superuser.com/questions/115349/firefox-this-connection-is-untrusted-behind-corporate-firewall https://help.zscaler.com/zia/how-do-i-use-zscaler-certificate-ssl-inspection