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Why can't I access You Tube since 6-21-2019. I received this message. Error code: SEC_ERROR_UNKNOWN_ISSUER View Certificate

  • 7 پاسخ
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  • آخرین پاسخ توسّط cor-el

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Why can't I access You Tube since 6-21-2019. I received this message. Error code: SEC_ERROR_UNKNOWN_ISSUER View Certificate. Before 6-21-2019, access to YOU TUBE had no problems at all.

Why can't I access You Tube since 6-21-2019. I received this message. Error code: SEC_ERROR_UNKNOWN_ISSUER View Certificate. Before 6-21-2019, access to YOU TUBE had no problems at all.

All Replies (7)

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Hi ru2569, if the website is well run, this message usually indicates that you are connecting to the site indirectly, through an intermediary.

To get more information, could you click that View Certificate button and see whether Firefox shows a certificate similar to the attached -- a certificate for *.google.com that also covers numerous other Google properties.

If you want to share the certificate you see, there is a way to do that. Click the SEC_ERROR_UNKNOWN_ISSUER error code to open a panel showing an encoded version of the certificate you could copy/paste into a reply here.

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I followed you suggestion:

https://www.youtube.com/ Peer’s Certificate issuer is not recognized. HTTP Strict Transport Security: true HTTP Public Key Pinning: true Certificate chain: -----BEGIN CERTIFICATE----- MIIHXDCCBkSgAwIBAgIQUYCCEoCid6mn7dcWVOcEADANBgkqhkiG9w0BAQsFADBv MQswCQYDVQQGEwJVUzELMAkGA1UECBMCQ0ExEjAQBgNVBAcTCUZhaXJmaWVsZDEM MAoGA1UEChMDQVRUMQwwCgYDVQQLEwNDU08xIzAhBgNVBAMTGmNhZmZzc2x2MDEu cHN0LmNzby5hdHQuY29tMB4XDTE5MDYxMTEyNDE1NloXDTE5MDkwMzEyMjEwMFow ZjELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1v dW50YWluIFZpZXcxEzARBgNVBAoMCkdvb2dsZSBMTEMxFTATBgNVBAMMDCouZ29v Z2xlLmNvbTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABCSIIYgOLtHYbV9oiQOq Pl3MXH0TY35tTAcu73beEfDqCArd8tx15HxzbtMD5CLiiy4gWn/mHnYxWelYc1Pm vnajggTGMIIEwjCCBGoGA1UdEQSCBGEwggRdggwqLmdvb2dsZS5jb22CDSouYW5k cm9pZC5jb22CFiouYXBwZW5naW5lLmdvb2dsZS5jb22CEiouY2xvdWQuZ29vZ2xl LmNvbYIYKi5jcm93ZHNvdXJjZS5nb29nbGUuY29tggYqLmcuY2+CDiouZ2NwLmd2 dDIuY29tghEqLmdjcGNkbi5ndnQxLmNvbYIKKi5nZ3BodC5jboIWKi5nb29nbGUt YW5hbHl0aWNzLmNvbYILKi5nb29nbGUuY2GCCyouZ29vZ2xlLmNsgg4qLmdvb2ds 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bGUtYW5hbHl0aWNzLmNvbYIKZ29vZ2xlLmNvbYIPZ29vZ2xlY25hcHBzLmNughJn b29nbGVjb21tZXJjZS5jb22CGHNvdXJjZS5hbmRyb2lkLmdvb2dsZS5jboIKdXJj aGluLmNvbYIKd3d3Lmdvby5nbIIIeW91dHUuYmWCC3lvdXR1YmUuY29tghR5b3V0 dWJlZWR1Y2F0aW9uLmNvbYIPeW91dHViZWtpZHMuY29tggV5dC5iZTAMBgNVHRMB Af8EAjAAMA4GA1UdDwEB/wQEAwIHgDATBgNVHSUEDDAKBggrBgEFBQcDATAfBgNV HSMEGDAWgBRTilgonsy/jeh+hwfxkdW8JKCszjANBgkqhkiG9w0BAQsFAAOCAQEA mFyH+j49jsoE82VVCAL4wacKd45AL6S/AICTkJfkvwYWWYVUhfSiKEIfZbcfGfk6 C8omGdPwqbmHP4KUb98cEOyovgJv1f0stYuhrwlMWJsI3KGB8yqjGL/mmmornBFy iPQ8/Q/SAX+BgemN1oPCE9e2gG8OjGwlNpUuOwHVWhL/2XcHYjNv1mR1L8hQNAFp XkbJf6hr4PV7PFkRCWXpsQfKPIKR4NUV13I9K+qI2hw3eh+n2/iOsaX4wBGR6ugv jQZlDGRxce08MtcyE26RIY9TBYNMzcEsoJreex0O1aJx9XGXZhz2HQreZ4C9kk6J dGatomlrBA5yadE8sETnLg== -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- MIIEZzCCA0+gAwIBAgIKYQOfmAAAAAAACTANBgkqhkiG9w0BAQUFADBQMQswCQYD VQQGEwJVUzEMMAoGA1UEChMDQVRUMQwwCgYDVQQLEwNDU08xJTAjBgNVBAMTHEFU VCBCbHVlQ29hdCBJbnRlcm1lZGlhdGUgQ0EwHhcNMTgxMjA0MTI1NTEyWhcNMjAx MjA0MTMwNTEyWjBvMQswCQYDVQQGEwJVUzELMAkGA1UECBMCQ0ExEjAQBgNVBAcT CUZhaXJmaWVsZDEMMAoGA1UEChMDQVRUMQwwCgYDVQQLEwNDU08xIzAhBgNVBAMT GmNhZmZzc2x2MDEucHN0LmNzby5hdHQuY29tMIIBIjANBgkqhkiG9w0BAQEFAAOC AQ8AMIIBCgKCAQEAq4D3enTMVh5OR3mjX8801sP4UqZCfZjBeuRbySj4waRZoDsp k1yHTp4ElHMDtw3ln9hAREqt5QLddxVlSgPoCWDNMnNLYcSEVfw2Et2oh4fQmCEb MlygEEscg+8QU0RAD6kj8Eb2OJZse/LRorUCHFDXV5EgEFuPQ1D3BWfYXBko65Dv xH/Wh3xL6sJjpwEgUA81Im7qNHkZ6U5iutI3SnH3Znhp9OMSKYCRL1ET1hk+bcqS hFBJtGcZUKIlEKqc6daCV2Cpb63szUdvpP75rxMclAMS/TDTa8ifKp2U51hwVrp+ Py+1SQY/VdLhS4Ui43k4cx0t3fTIvwMEZBOyjwIDAQABo4IBIjCCAR4wDwYDVR0T AQH/BAUwAwEB/zALBgNVHQ8EBAMCAYYwHQYDVR0OBBYEFFOKWCiezL+N6H6HB/GR 1bwkoKzOMB8GA1UdIwQYMBaAFKXY+A/0wF/l1Um0WMDnoLzpGAe5MEQGA1UdHwQ9 MDswOaA3oDWGM2h0dHA6Ly91dmVyc2VtZWRpYS5jc28uYXR0LmNvbS9jcmwvYXR0 X2JsdWVjb2F0LmNybDBPBggrBgEFBQcBAQRDMEEwPwYIKwYBBQUHMAKGM2h0dHA6 Ly91dmVyc2VtZWRpYS5jc28uYXR0LmNvbS9haWEvYXR0X2JsdWVjb2F0LmNydDAn BgNVHSUEIDAeBggrBgEFBQcDAQYIKwYBBQUHAwIGCCsGAQUFBwMEMA0GCSqGSIb3 DQEBBQUAA4IBAQB3EBZgg5kqNvzrU1UCVOUNOUB+9S0bCoUOsLKC1tbjBEYSzPgc uUgDHkxCxw6l0DpLnk1EjpED1rKuWFgM/gsus//RGNG3e8Y0w+01x0+FdJZ34OPD q1UpOvUK0knZbbWY+25HNC+G6PDFuaYQXKYPBcn1fyI0rd2MonoPZS9XuWh7QtP1 CjW7+i5OiibmdcPtH8Tt1aNB2rYcr9htA8B+TCfnaJjJ2lUGNALjc01iyUHN9vrg nlefZeD+dcQNCDvY6oAVdS1GYx2zjjx7RtKfUUfmPr33l1NImV7MC2weE4dJo8P+ EyPxTQyvW1d4z4omObck+fxr8v5zkamP5866 -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- MIIEWTCCA0GgAwIBAgIKYQPheAAAAAAACDANBgkqhkiG9w0BAQUFADBTMQswCQYD VQQGEwJVUzEMMAoGA1UEChMDQVRUMQwwCgYDVQQLEwNDU08xKDAmBgNVBAMTH0FU VCBFbnRlcnByaXNlIEludGVybmFsIFJvb3QgQ0EwHhcNMTUwODI0MTMxNjMxWhcN MjUwODI0MTMyNjMxWjBQMQswCQYDVQQGEwJVUzEMMAoGA1UEChMDQVRUMQwwCgYD VQQLEwNDU08xJTAjBgNVBAMTHEFUVCBCbHVlQ29hdCBJbnRlcm1lZGlhdGUgQ0Ew ggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDP4XstFgdy9KVIuGFQQS/V Z46O+8dTss/CyktOhiKian8t/vu7l23BRkYw7SPy0aQqDCTdov2ZgXam1jhJJRzZ Ov/AEjCzR6unhmBquY3t1D92srT6ngaMMTpyxvOcqiH9rmNA2Pu4t4Q8y9Z7hwaG ilgSOFY2pEhKpEvO/AjDOLXxLuwhG28KPfSG8SNX6KsTZPGb/mRjsyigHtfvPCzB 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Hi ru2569, thank you for the certs. On the first certificate, the issuer is strange:

Name: caffsslv01.pst.cso.att.com Organization: ATT

Hmm, why is AT&T in there??

When I check the next certificate up the chain, its issuer is:

ATT BlueCoat Intermediate CA

I think Blue Coat is a filtering technology/service owned by Symantec which may be integrated into some AT&T services.

If you are using an AT&T network connection, it's possible the service is trying to replace the genuine YouTube page with a message of some kind, but Firefox can't show the message due to a gap in the certificate chain.

How does YouTube work in other browser(s) on your system?

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I can access YOUTUBE with no problem using Chrome or Internet Explorer.

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The last certificate shows:

  • Subject C=US, O=ATT, OU=CSO, CN=ATT BlueCoat Intermediate CA
  • Issuer C=US, O=ATT, OU=CSO, CN=ATT Enterprise Internal Root CA

You can check the connection settings.

  • Options/Preferences -> General -> Network: Connection -> Settings

If you do not need to use a proxy to connect to internet then try to select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See "Firefox connection settings":

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You can set this pref to true on the about:config page to import root certificate(s) from the Windows certificate store.

  • security.enterprise_roots.enabled = true
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