I have been trying to connect to facebook and youtube but it says i have an insecure connection....
The owner of www.facebook.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.
This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox may only connect to it securely. As a result, it is not possible to add an exception for this certificate.
www.facebook.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported. Error code: SEC_ERROR_UNKNOWN_ISSUER
P.S i have avg security system
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There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connections and send their own certificate.
How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites
Open AVG.
- click "Options" -> "Advanced Settings" -> "Web Browsing Protection" -> "Online Shield" -> "Expert Settings"
- uncheck "Scan encrypted (TLS and SSL) network traffic" option
- https://support.avg.com/SupportArticleView?l=en&urlName=How-to-disable-AVG&q=Online+Shield
Thank you for the quick reply but i cant click anything in expert settings unless i have pro....
I checked it but it still the sites still isnt working
hi, can you give us more information about the error by clicking on the error code, copying the text to the clipboard and then pasting it here into a reply in the forum like shown in the screenshot.
thank you!
Peer’s Certificate issuer is not recognized.
HTTP Strict Transport Security: true HTTP Public Key Pinning: true
Certificate chain:
-----BEGIN CERTIFICATE----- MIIDIzCCAgsCBFhVVlcwDQYJKoZIhvcNAQELBQAwQDEuMCwGA1UEAwwlQ2lzY28g VW1icmVsbGEgU2Vjb25kYXJ5IFN1YkNBIG1pYS1TRzEOMAwGA1UECgwFQ2lzY28w HhcNMTcwMTA1MTk1ODI5WhcNMTcwMTEwMTk1ODI5WjBsMQswCQYDVQQGEwJVUzET MBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5jaXNjbzEWMBQG A1UECgwNT3BlbkROUywgSW5jLjEYMBYGA1UEAwwPd3d3LnlvdXR1YmUuY29tMIIB IjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzAnGFhev1a7WaWUw+Sh9nKRa nvrwz/yBJ936MapbdQUckG4p/aLnSLa5lANTv8Vax4holpj7WtWqYAaIlbhU/gx6 h96Vl8hwOT0yc8RaQPHlmzsOtoqVQuK/lwF6Wm1ZtKb9vnC9LGyhkjTA50YLnRQu rKwroc0yQLguZX3oK4w8/7okG9kFZhciKCNstZac8bBeFwXdPcQLlSjGQpw0cq0W e+XRtovAMwKMEnedwOYBWvBAcT1HDe7Tu00hud2K25KNES5h8NF8nm1lTAGN+sck TYUfdz6QTORarxGLkaeOVUkMKDW7sB7pjc1bAS5GVwoW7TC806KMxK+U0YiOlQID AQABMA0GCSqGSIb3DQEBCwUAA4IBAQAR9uQES+K4U4a1wUPi9LLIi//or3ZlGGm9 E3DY2/z7YF5NDH0uNfn53+/6lsljsIqNmd9ityL3BjCUTSMxmDxA+52c+sqy8jMr pwnnqKhrTSSKswm7LHRjzzgxsNfGLf+PUhTJEKknpomViD3BRIMlac4VOp9HT/iO WFRT2zfngXw+LFTi3bYUkey0X2a0L+UJkXj2A66MRAo5K9D1g8qMGsbvp3RiCll6 13RNrE4GZeWKMyZLphs6qsYCUjNxJo4iNVfF+v8LXWuo78shbMSvKg16SECevTcQ XbSpd67THk0KE/bQnP7zdecq4bIF8WQedgZ9HwezB4XbwS3mFs8C -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- MIID3TCCAsWgAwIBAgIRAIQqk/i7Xkm1pFcpPaAa3RswDQYJKoZIhvcNAQELBQAw NzElMCMGA1UEAwwcQ2lzY28gVW1icmVsbGEgUHJpbWFyeSBTdWJDQTEOMAwGA1UE CgwFQ2lzY28wHhcNMTcwMTA1MjMwOTUxWhcNMTcwMTE2MjMwOTUxWjBAMS4wLAYD VQQDDCVDaXNjbyBVbWJyZWxsYSBTZWNvbmRhcnkgU3ViQ0EgbWlhLVNHMQ4wDAYD VQQKDAVDaXNjbzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMwJxhYX r9Wu1mllMPkofZykWp768M/8gSfd+jGqW3UFHJBuKf2i50i2uZQDU7/FWseIaJaY +1rVqmAGiJW4VP4MeofelZfIcDk9MnPEWkDx5Zs7DraKlULiv5cBelptWbSm/b5w vSxsoZI0wOdGC50ULqysK6HNMkC4LmV96CuMPP+6JBvZBWYXIigjbLWWnPGwXhcF 3T3EC5UoxkKcNHKtFnvl0baLwDMCjBJ3ncDmAVrwQHE9Rw3u07tNIbndituSjREu YfDRfJ5tZUwBjfrHJE2FH3c+kEzkWq8Ri5GnjlVJDCg1u7Ae6Y3NWwEuRlcKFu0w vNOijMSvlNGIjpUCAwEAAaOB2jCB1zAfBgNVHSMEGDAWgBQ3QZhaPSAuZ8oNMssn yeDF7bqf6TASBgNVHRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBhjAdBgNV HQ4EFgQUgyzhVpxWKjsPleR8S8R0adKlvu0wcQYIKwYBBQUHAQEEZTBjMCMGCCsG AQUFBzABhhdodHRwOi8vb2NzcC5vcGVuZG5zLmNvbTA8BggrBgEFBQcwAoYwaHR0 cDovL2NhY2VydHMub3BlbmRucy5jb20vNDQ4NjNBQjE1NDY0NThENzIuY3J0MA0G CSqGSIb3DQEBCwUAA4IBAQACKnE/uhU4Zw1ThQoRrY6yNbzWvktRpAuzX4aFqSnB MClolbwKuDBnnMUMu03v0PN7dK8agB/duqKcdxPZ4wMyJEKK2n4KtWXav1xPOeW1 Q/IF7XW5FzczuOVUKWKM9eq4Q6mCc0aIOwF+/MxMYffBqfiC14o0lPnhxGp0dWAk xiHjyIfLJ5ajKULoBn4d4YbO6HHrQyA+09BKVOmg05+WzJPpYBTW/0EcJ30QtWGT +jzV1KC9vlU/p0UIwhZ5CLJVcVcao9V8V1CAvuqmlWVe0F3kLNobr41rqMAqefjN EReKndvPpj3bvfUErEkkWK+X/hoydsBj9C3kP1/DV3LM -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- MIIEgTCCA2mgAwIBAgIJBEhjqxVGRY1yMA0GCSqGSIb3DQEBCwUAMDExDjAMBgNV BAoTBUNpc2NvMR8wHQYDVQQDExZDaXNjbyBVbWJyZWxsYSBSb290IENBMB4XDTE2 MDYyODE1NDAxMVoXDTIxMDYyODE1NDAxMVowNzElMCMGA1UEAwwcQ2lzY28gVW1i cmVsbGEgUHJpbWFyeSBTdWJDQTEOMAwGA1UECgwFQ2lzY28wggEiMA0GCSqGSIb3 DQEBAQUAA4IBDwAwggEKAoIBAQCvR/Tm+U0VahUptIKAkU7BwSKgO1HO0CMdZXCO OLFh9+pCoG1Ly7UiudFAumlfA4kzs1SS9xR2ax0TYIQG84hJsoOPSaZU6wkWWJDq mZVD4+LSPZLUuMWbgWy8/BuqKKL32JjInU/LRXF3AaapHT6eprR5vv5MYSWzFv4r QzhMXy8i8eK48EKsQyf3UBUHdUmOQFBYuRkYlKdave0ipxjMUYKh6DwJX+5psl7S lwHxzKxppwBqZhI5GiuWIs4RhuB+1hOr1zuAb9Oy8WNryXTijXQJ+thl74oo0CoV XS2nZQyDk1X2CUOpTy2Kj4W4ucd4Y1jRp37FkWQwivWq5DU5AgMBAAGjggGUMIIB kDAOBgNVHQ8BAf8EBAMCAYYwEgYDVR0TAQH/BAgwBgEB/wIBATBSBgNVHSAESzBJ MEcGCisGAQQBCRUBHQAwOTA3BggrBgEFBQcCARYraHR0cDovL3d3dy5jaXNjby5j b20vc2VjdXJpdHkvcGtpL3BvbGljaWVzLzAdBgNVHQ4EFgQUN0GYWj0gLmfKDTLL J8ngxe26n+kwTAYDVR0fBEUwQzBBoD+gPYY7aHR0cDovL3d3dy5jaXNjby5jb20v c2VjdXJpdHkvcGtpL2NybC9jaXNjb3VtYnJlbGxhcm9vdC5jcmwwgYcGCCsGAQUF BwEBBHsweTBJBggrBgEFBQcwAoY9aHR0cDovL3d3dy5jaXNjby5jb20vc2VjdXJp dHkvcGtpL2NlcnRzL2Npc2NvdW1icmVsbGFyb290LmNlcjAsBggrBgEFBQcwAYYg aHR0cDovL3BraWN2cy5jaXNjby5jb20vcGtpL29jc3AwHwYDVR0jBBgwFoAUQ3MA 3iS6QBpAVCx9fNUASIkMcKQwDQYJKoZIhvcNAQELBQADggEBAAhlqdX9AAHOyNPv KA44ulyoprNnXp62XeYnlKRgCPvShWW2eDIMOePS8+RvuPGJdtAm1YoPa9hn0WO2 L+jHmnob7so2yc3c02uio9Q4VqPCuA1T/RmmXerpvHtxx1FfUhboBoiGvP/dnFTX DF0lzLEllP3tYZOH0wjsTjhPERN60zR29lKHludW9ZRc5Fkxj5ZwALvAZ2Iqb0HG DwIhJJjXUpJjZXQPRGQ8N+VDx2UqTf74g/rpKcALUERGFrrJMO0Z7yaiqVsVQ9/J 4FAJCjB6fkivL5SvmDWCB1ZeiRc2ud5qm/II0OuGdtX+mo0/Lo9Lh9Tdg2LxUxEn 7cAtMK0= -----END CERTIFICATE-----
由 cor-el 於 修改
hi, it appears that you or your network uses cisco/opends umbrella to monitor secure connections. apparently you need to install their certificate first in order for this to work in browsers: https://support.opendns.com/hc/en-us/articles/227987007-Block-Page-Errors-Installing-the-Cisco-Root-CA
if after installing the cert you are still not be able to access the pages, i suggest you get in contact with their support at https://support.opendns.com/ with further inquiries about this...