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Once I get the error "your connection is insecure" it continues until I reboot. Other browsers continue to work.

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  • Last reply by philipp

rightasrains
rightasrains
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Your connection is not secure The owner of mail.yahoo.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. Learn more… Report errors like this to help Mozilla identify and block malicious sites mail.yahoo.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

Once I get the error message I cannot get to other sites like att.com, cnn.com, bing.com, Mozilla.org however att.net works.

Please help. Thanks

Your connection is not secure The owner of mail.yahoo.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. Learn more… Report errors like this to help Mozilla identify and block malicious sites mail.yahoo.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 Once I get the error message I cannot get to other sites like att.com, cnn.com, bing.com, Mozilla.org however att.net works. Please help. Thanks

Chosen solution

thank you - the issue is caused by avg/avast web shield on your system that's tampering with secure connections apparently. you could try disabling that: https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER#w_avast

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All Replies (3)

philipp
philipp
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hi, could 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!

rightasrains
rightasrains Mwenye swali
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https://mozilla.org/

Peer’s Certificate issuer is not recognized.

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

Certificate chain:

BEGIN CERTIFICATE-----

MIIEzzCCA7egAwIBAgIQFXxjNfNd+UWe2A3rHIi31DANBgkqhkiG9w0BAQsFADB7 MTgwNgYDVQQLDC9nZW5lcmF0ZWQgYnkgQVZHIEFudGl2aXJ1cyBmb3IgU1NML1RM UyBzY2FubmluZzEcMBoGA1UECgwTQVZHIFdlYi9NYWlsIFNoaWVsZDEhMB8GA1UE AwwYQVZHIFdlYi9NYWlsIFNoaWVsZCBSb290MB4XDTE2MTEwOTAwMDAwMFoXDTE4 MTExNDEyMDAwMFowggECMR0wGwYDVQQPDBRQcml2YXRlIE9yZ2FuaXphdGlvbjET MBEGCysGAQQBgjc8AgEDEwJVUzEbMBkGCysGAQQBgjc8AgECEwpDYWxpZm9ybmlh MREwDwYDVQQFEwhDMjc1OTIwODEeMBwGA1UECRMVNjUwIENhc3RybyBTdCBTdGUg MzAwMQ4wDAYDVQQREwU5NDA0MTELMAkGA1UEBhMCVVMxEzARBgNVBAgTCkNhbGlm b3JuaWExFjAUBgNVBAcTDU1vdW50YWluIFZpZXcxHDAaBgNVBAoTE01vemlsbGEg Q29ycG9yYXRpb24xFDASBgNVBAMTC21vemlsbGEub3JnMIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEAuKZ/pDsBG+62iYXrT6tShx8hlKsWRwUQMLFK+HOz jYHjwnKcogdQwnF4EQtQX1TCtLqh1XcYPDeClThuSOGtmRnRWjr+3LKVB49EZ+2C BRvT4aqmv1veuAnCqsTXt3aa9kLkftZyhD5GVx//mrvsuRblgtmLzQDAomY1QsPL vrh9bZc1OtWq8eiQT7F2UO6CxRDPLOAasOMDhMeh53mADL/RsfS4fFNxD2hFoqyj vHW8fG8CvxxNTpZhWo7t8vyIqCNzZ9Ok7Htrih+Q6g0BFOrpINj4Up7uVdufHHV6 45aHt9NTelsv//St8Ij4kqzk+H0N3FxZEu3v7x9DjQVyBwIDAQABo4HFMIHCMB8G A1UdIwQYMBaAFNmE2IVmh/E7Zmrp9JCriEa1FvHrMB0GA1UdDgQWBBQqgLikN0tK NTQUZDGe8Hv8tsOgkzAnBgNVHREEIDAeggttb3ppbGxhLm9yZ4IPd3d3Lm1vemls bGEub3JnMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYB BQUHAwIwDAYDVR0TAQH/BAIwADAaBgNVHSAEEzARMA8GCysGAQQBgcQlAQIBMAAw DQYJKoZIhvcNAQELBQADggEBAFwcmR/3GMImFfHNFhmPHJbuzsaHjnUywyJXN5YR vsQLpp2n0yHPD+irDv7lCEiFnHZDIrgbKWvK3cx2YbpwnkladBExT9qRJWG7wqzO bdkzl8FgV5jBt8lIqINd9biNsgR0g7xAUZ/71R1vzxXqirsyhx8+HRvvfyz7S8nG 4d2XjQHNgYrtt08zZfee/5mKBWR2rfV+zdAtI1wqPqrUdBQatNZMLQFOUzydRJQt T/scIyu6t99iAHQBVSrPiKqhEcPhHVmmfDMwqdhR+j0/Gcdr9Zrp/ZaaY6MeD9Zo t5dNhorgK0Rk5tMILs4/+I6WR926jYiS+fmGWo9PTmycpp0=

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

MIID9TCCAt2gAwIBAgIQQ3dYHPDwI0KZ0y33AyORIjANBgkqhkiG9w0BAQsFADB7 MTgwNgYDVQQLDC9nZW5lcmF0ZWQgYnkgQVZHIEFudGl2aXJ1cyBmb3IgU1NML1RM UyBzY2FubmluZzEcMBoGA1UECgwTQVZHIFdlYi9NYWlsIFNoaWVsZDEhMB8GA1UE AwwYQVZHIFdlYi9NYWlsIFNoaWVsZCBSb290MB4XDTEwMDEwMTEyMDAwMFoXDTQw MDEwMTEyMDAwMFowezE4MDYGA1UECwwvZ2VuZXJhdGVkIGJ5IEFWRyBBbnRpdmly dXMgZm9yIFNTTC9UTFMgc2Nhbm5pbmcxHDAaBgNVBAoME0FWRyBXZWIvTWFpbCBT aGllbGQxITAfBgNVBAMMGEFWRyBXZWIvTWFpbCBTaGllbGQgUm9vdDCCASIwDQYJ KoZIhvcNAQEBBQADggEPADCCAQoCggEBAMK8yCfZ5osF4QF30ayQv2fzmiNxV/VG ndYBOgcFYRDlAKWLL27veSmpIFwUp+4h10OfOlinZqmi7QIcF0UF8gQKkFPMnDpc LLHDYlddc5C5/pjrqzJmYCKWOLQRnViegYhaJabCbVps2BTMMwd03XAmXI4rNtH6 Sr6QrmMayuuRqURg3IZxn63xROTA55QufWkrG71D0KnA1pz8rVaaTFuJuV8s3wNm Gub+PdU34W+KqIyd0oeBa72R7cYMcIdoyEwcw0zZCN3dhN9ScA/bdBTECQM7yXS6 88R1vyj8kk9hV4dp49J3cv/p5J23tNFM0ju68QJNtOPsZXHMF8PTqpUCAwEAAaN1 MHMwDwYDVR0TBAgwBgEB/wIBADALBgNVHQ8EBAMCAgQwEwYDVR0lBAwwCgYIKwYB BQUHAwEwHQYDVR0OBBYEFNmE2IVmh/E7Zmrp9JCriEa1FvHrMB8GA1UdIwQYMBaA FNmE2IVmh/E7Zmrp9JCriEa1FvHrMA0GCSqGSIb3DQEBCwUAA4IBAQCJY1wwb/B9 SEAOWMjfHFCytO6F+Tw50rI1BS/ODzJP7UW4UPQa2tnNUevSV8lkDka83SDYvdR5 996v8BY3f01zCckIaV8ZGqAe4VDxm9Q9gdnmbqSSBBCJiPShnVyyVe+tYFsvXLxb MHkJGCDtc6I6YKOMPu2CXMUB/aCmBkK+GercWceAJQ123h2qjt/wF5/BhpyaElRQ WfY1dYyN+u56UUDF9o2+SI9WDnY06w/Za5sN2Ip9i3Z/IYIGZLl98OvR44KiRGsD mUQfVVnUq2j7Anfun9Fhjn1USVZYEg55oCIpRBW1r6Dq0eb69Kk4pIMy7EGWvpVu ON9oJCeuoG3E

END CERTIFICATE-----
philipp
philipp
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Suluhisho teule

thank you - the issue is caused by avg/avast web shield on your system that's tampering with secure connections apparently. you could try disabling that: https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER#w_avast