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all websites listed insecure and will not open using firefox 55.0.3 on mcbook ox10.12.6

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I INSTALLED OX10.12.6 ON MY MAC BOOK PRO. I THEN UPDATE FIREFOX OT 55.0.3. NOW IF A GO TO ANY WEBSITE , I GET THE MESSAGE THAT IT IS AN INSECURE WEBSITE AND IT WILL NOT OPEN IT. HOW DO IT GET BACK TO BE ABLE TO USE FIREFOX? I HAVE TWO MAC WITH THE SAME SET UP. ONE WORKS AND THE OTHER DOES NOT.

I INSTALLED OX10.12.6 ON MY MAC BOOK PRO. I THEN UPDATE FIREFOX OT 55.0.3. NOW IF A GO TO ANY WEBSITE , I GET THE MESSAGE THAT IT IS AN INSECURE WEBSITE AND IT WILL NOT OPEN IT. HOW DO IT GET BACK TO BE ABLE TO USE FIREFOX? I HAVE TWO MAC WITH THE SAME SET UP. ONE WORKS AND THE OTHER DOES NOT.

Chosen solution

i only found an instruction for how to do it for the windows version on avast's website, but i think it should look fairly similar on mac as well: https://www.avast.com/faq.php?article=AVKB189

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Additional System Details

Installed Plug-ins

  • Shockwave Flash 27.0 r0

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:55.0) Gecko/20100101 Firefox/55.0

More Information

philipp
  • Top 10 Contributor
  • Moderator
4796 solutions 21294 answers

hi, first please make sure that the date, time & timezone are set correctly on your system. if this doesn't solve the issue (or it is already set properly), a solution depends on the individual circumstances:

  • what is the error code shown when you click on advanced on that error page?
  • please also 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!

hi, first please make sure that the [[How to troubleshoot time related errors on secure websites|date, time & timezone]] are set correctly on your system. if this doesn't solve the issue (or it is already set properly), a solution depends on the individual circumstances: * what is the '''error code''' shown when you click on '''advanced''' on that error page? * please also 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!
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Question owner

date ,time, timezone is set properly error code : sec_error_unknown_issuer all web sites show this error

https://www.yahoo.com/

Peer’s Certificate issuer is not recognized.

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

Certificate chain:


BEGIN CERTIFICATE-----

MIIGczCCBVugAwIBAgICFj8wDQYJKoZIhvcNAQELBQAwaDELMAkGA1UEBhMCQ1ox DzANBgNVBAgTBlByYWd1ZTEOMAwGA1UEChMFQVZBU1QxHTAbBgNVBAsTFFNvZnR3 YXJlIERldmVsb3BtZW50MRkwFwYDVQQDExBBdmFzdCB0cnVzdGVkIENBMB4XDTE3 MDUxOTAwMDAwMFoXDTE3MTAxNzEyMDAwMFowXjELMAkGA1UEBhMCVVMxCzAJBgNV BAgTAkNBMRIwEAYDVQQHEwlTdW5ueXZhbGUxFDASBgNVBAoMC1lhaG9vISBJbmMu MRgwFgYDVQQDDA8qLnd3dy55YWhvby5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IB DwAwggEKAoIBAQC+0AEkIZq2uEhecyC3GIClLvLt63tWM4MUC43+lXiAFOZqv+aK fkBfg4t4rTnk19OxF/swl9g2FSbMisiEi4vHMGSOrCXqv43RLXKeF+/bfTSNcVK7 tYeZ3MZyMT0nCWxadkpm9k7SIEWBZAKcpft+ywJ3hUghKPpiO3btZVfxSxMdexe/ JyECZDTwRzHILmNBXcjMr7FFASeqvd5+hCsCoy2UMchfBI1RLJy5gHy+QWllvy/v Tsgzy9Y3J2R5Q3fVaBGLi/3kxd3a+irDX2fJ4B5gIlV0WaFI7GoMeoUb/cTwfG7X RRKPa6HG9IJhwHA33pgdJiJbHd5TOg9UpQ1ZAgMBAAGjggMvMIIDKzAdBgNVHQ4E FgQUdc5VxqWsx+5bP16BVGZ9nimamqMwHwYDVR0jBBgwFoAU4Rl1+RxGIg0fP6ac ambr/ZAmviEwggLnBgNVHREEggLeMIIC2oIPKi53d3cueWFob28uY29tghBhZGQu bXkueWFob28uY29tgg8qLmF0dC55YWhvby5jb22CDWF0dC55YWhvby5jb22CDGF1 LnlhaG9vLmNvbYIMYmUueWFob28uY29tgg1icmIueWFob28uY29tggxici55YWhv by5jb22CD2NhLm15LnlhaG9vLmNvbYITY2Eucm9nZXJzLnlhaG9vLmNvbYIMY2Eu eWFob28uY29tghBkZGwuZnAueWFob28uY29tggxkZS55YWhvby5jb22CFGVuLW1h a3Rvb2IueWFob28uY29tghFlc3Bhbm9sLnlhaG9vLmNvbYIMZXMueWFob28uY29t gg9mci1iZS55YWhvby5jb22CFmZyLWNhLnJvZ2Vycy55YWhvby5jb22CEmZyb250 aWVyLnlhaG9vLmNvbYIMZnIueWFob28uY29tggxnci55YWhvby5jb22CDGhrLnlh aG9vLmNvbYIOaHNyZC55YWhvby5jb22CF2lkZWFuZXRzZXR0ZXIueWFob28uY29t ggxpZC55YWhvby5jb22CDGllLnlhaG9vLmNvbYIMaW4ueWFob28uY29tggxpdC55 YWhvby5jb22CEW1ha3Rvb2IueWFob28uY29tghJtYWxheXNpYS55YWhvby5jb22C DG15LnlhaG9vLmNvbYIMbnoueWFob28uY29tggxwaC55YWhvby5jb22CDHFjLnlh aG9vLmNvbYIMcm8ueWFob28uY29tggxzZS55YWhvby5jb22CDHNnLnlhaG9vLmNv bYIMdHcueWFob28uY29tggx1ay55YWhvby5jb22CDHVzLnlhaG9vLmNvbYIRdmVy aXpvbi55YWhvby5jb22CDHZuLnlhaG9vLmNvbYINd3d3LnlhaG9vLmNvbYIJeWFo b28uY29tggx6YS55YWhvby5jb22CDXplZC55YWhvby5jb20wDQYJKoZIhvcNAQEL BQADggEBAFYt7OOnn65NPfQUeSJZacqc86ENZ+TmPVng+acWKMY0XiEPlV+Mhrxr GdoFbKGjo6f96XHuKgRJ87sN08iDlHaw5A+THyXZC+RGcJZluVODL29nC4Pdhae1 QEMVXd142iqo10Uwf+2pw8L4H5raXQU4LDJ4b/s3FuTH+t7Jz5wy0Zu24l/lQg6H 8k5cH7h+xU/e3IGincCyUqUE2lnuCU/O+2kn30UdbD0gYfyhAfXQesqYMJekY70t SRg4nepY2xOKdl9H34DJairxJie7wTBbMrovAbIzC66HT/bg3OsHdkaEM4dvnyMd 6F8PeMmDwvLMyI1cEZ+V+43BM//pkKo=


END CERTIFICATE-----
date ,time, timezone is set properly error code : sec_error_unknown_issuer all web sites show this error https://www.yahoo.com/ Peer’s Certificate issuer is not recognized. HTTP Strict Transport Security: false HTTP Public Key Pinning: false Certificate chain: -----BEGIN CERTIFICATE----- MIIGczCCBVugAwIBAgICFj8wDQYJKoZIhvcNAQELBQAwaDELMAkGA1UEBhMCQ1ox DzANBgNVBAgTBlByYWd1ZTEOMAwGA1UEChMFQVZBU1QxHTAbBgNVBAsTFFNvZnR3 YXJlIERldmVsb3BtZW50MRkwFwYDVQQDExBBdmFzdCB0cnVzdGVkIENBMB4XDTE3 MDUxOTAwMDAwMFoXDTE3MTAxNzEyMDAwMFowXjELMAkGA1UEBhMCVVMxCzAJBgNV BAgTAkNBMRIwEAYDVQQHEwlTdW5ueXZhbGUxFDASBgNVBAoMC1lhaG9vISBJbmMu MRgwFgYDVQQDDA8qLnd3dy55YWhvby5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IB DwAwggEKAoIBAQC+0AEkIZq2uEhecyC3GIClLvLt63tWM4MUC43+lXiAFOZqv+aK fkBfg4t4rTnk19OxF/swl9g2FSbMisiEi4vHMGSOrCXqv43RLXKeF+/bfTSNcVK7 tYeZ3MZyMT0nCWxadkpm9k7SIEWBZAKcpft+ywJ3hUghKPpiO3btZVfxSxMdexe/ JyECZDTwRzHILmNBXcjMr7FFASeqvd5+hCsCoy2UMchfBI1RLJy5gHy+QWllvy/v Tsgzy9Y3J2R5Q3fVaBGLi/3kxd3a+irDX2fJ4B5gIlV0WaFI7GoMeoUb/cTwfG7X RRKPa6HG9IJhwHA33pgdJiJbHd5TOg9UpQ1ZAgMBAAGjggMvMIIDKzAdBgNVHQ4E FgQUdc5VxqWsx+5bP16BVGZ9nimamqMwHwYDVR0jBBgwFoAU4Rl1+RxGIg0fP6ac ambr/ZAmviEwggLnBgNVHREEggLeMIIC2oIPKi53d3cueWFob28uY29tghBhZGQu bXkueWFob28uY29tgg8qLmF0dC55YWhvby5jb22CDWF0dC55YWhvby5jb22CDGF1 LnlhaG9vLmNvbYIMYmUueWFob28uY29tgg1icmIueWFob28uY29tggxici55YWhv by5jb22CD2NhLm15LnlhaG9vLmNvbYITY2Eucm9nZXJzLnlhaG9vLmNvbYIMY2Eu eWFob28uY29tghBkZGwuZnAueWFob28uY29tggxkZS55YWhvby5jb22CFGVuLW1h a3Rvb2IueWFob28uY29tghFlc3Bhbm9sLnlhaG9vLmNvbYIMZXMueWFob28uY29t gg9mci1iZS55YWhvby5jb22CFmZyLWNhLnJvZ2Vycy55YWhvby5jb22CEmZyb250 aWVyLnlhaG9vLmNvbYIMZnIueWFob28uY29tggxnci55YWhvby5jb22CDGhrLnlh aG9vLmNvbYIOaHNyZC55YWhvby5jb22CF2lkZWFuZXRzZXR0ZXIueWFob28uY29t ggxpZC55YWhvby5jb22CDGllLnlhaG9vLmNvbYIMaW4ueWFob28uY29tggxpdC55 YWhvby5jb22CEW1ha3Rvb2IueWFob28uY29tghJtYWxheXNpYS55YWhvby5jb22C DG15LnlhaG9vLmNvbYIMbnoueWFob28uY29tggxwaC55YWhvby5jb22CDHFjLnlh aG9vLmNvbYIMcm8ueWFob28uY29tggxzZS55YWhvby5jb22CDHNnLnlhaG9vLmNv bYIMdHcueWFob28uY29tggx1ay55YWhvby5jb22CDHVzLnlhaG9vLmNvbYIRdmVy aXpvbi55YWhvby5jb22CDHZuLnlhaG9vLmNvbYINd3d3LnlhaG9vLmNvbYIJeWFo b28uY29tggx6YS55YWhvby5jb22CDXplZC55YWhvby5jb20wDQYJKoZIhvcNAQEL BQADggEBAFYt7OOnn65NPfQUeSJZacqc86ENZ+TmPVng+acWKMY0XiEPlV+Mhrxr GdoFbKGjo6f96XHuKgRJ87sN08iDlHaw5A+THyXZC+RGcJZluVODL29nC4Pdhae1 QEMVXd142iqo10Uwf+2pw8L4H5raXQU4LDJ4b/s3FuTH+t7Jz5wy0Zu24l/lQg6H 8k5cH7h+xU/e3IGincCyUqUE2lnuCU/O+2kn30UdbD0gYfyhAfXQesqYMJekY70t SRg4nepY2xOKdl9H34DJairxJie7wTBbMrovAbIzC66HT/bg3OsHdkaEM4dvnyMd 6F8PeMmDwvLMyI1cEZ+V+43BM//pkKo= -----END CERTIFICATE-----
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philipp
  • Top 10 Contributor
  • Moderator
4796 solutions 21294 answers

thanks, it looks like your avast software is meddling with secure connections - it's best to disable the scanning of secure connections in its webshield preferences...

thanks, it looks like your avast software is meddling with secure connections - it's best to disable the scanning of secure connections in its webshield preferences...
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Question owner

I'M SORRY BUT I DO NOT KNOW HOW TO DO WHAT YOU SAID TO DO.

I'M SORRY BUT I DO NOT KNOW HOW TO DO WHAT YOU SAID TO DO.
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philipp
  • Top 10 Contributor
  • Moderator
4796 solutions 21294 answers

Chosen Solution

i only found an instruction for how to do it for the windows version on avast's website, but i think it should look fairly similar on mac as well: https://www.avast.com/faq.php?article=AVKB189

i only found an instruction for how to do it for the windows version on avast's website, but i think it should look fairly similar on mac as well: https://www.avast.com/faq.php?article=AVKB189
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Question owner

philipp said

i only found an instruction for how to do it for the windows version on avast's website, but i think it should look fairly similar on mac as well: https://www.avast.com/faq.php?article=AVKB189
''philipp [[#answer-1008497|said]]'' <blockquote> i only found an instruction for how to do it for the windows version on avast's website, but i think it should look fairly similar on mac as well: https://www.avast.com/faq.php?article=AVKB189 </blockquote>
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Question owner

THANK YOU SO MUCH!!!!!!

THANK YOU SO MUCH!!!!!!
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