This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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. Əgər kömək lazımdırsa lütfən yeni sual verin.

Your connection is not secure error - FOR ALL SITES (on Mac)

  • 4 cavab
  • 1 has this problem
  • 1 view
  • Last reply by Nick_R

Nick_R
Nick_R
more options

My Firefox seems to have completely broken. First of all, I noticed while on a news site, the browser was getting re-directed to a different news site. Then Firefox kept hanging. I uninstalled then reinstalled it, (and also "refreshed" it), and now it's showing "Your connection is not secure" for every single site I visit. This is worrying behaviour. Can anyone explain what's happening, and if there is a fix. Thanks.

My Firefox seems to have completely broken. First of all, I noticed while on a news site, the browser was getting re-directed to a different news site. Then Firefox kept hanging. I uninstalled then reinstalled it, (and also "refreshed" it), and now it's showing "Your connection is not secure" for every single site I visit. This is worrying behaviour. Can anyone explain what's happening, and if there is a fix. Thanks.

All Replies (4)

philipp
philipp
  • Moderator
more options

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!

Nick_R
Nick_R Question owner
more options

Thanks. I set the date and time to automatic, and nothing happened. Here is the error information I get from one site (Google)

https://www.google.com/search?client=firefox-b-d&q=certificate

Peer's Certificate issuer is not recognised.

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

Certificate chain:

BEGIN CERTIFICATE-----

MIIDqTCCApGgAwIBAgICRzowDQYJKoZIhvcNAQELBQAwaDELMAkGA1UEBhMCQ1ox DzANBgNVBAgTBlByYWd1ZTEOMAwGA1UEChMFQVZBU1QxHTAbBgNVBAsTFFNvZnR3 YXJlIERldmVsb3BtZW50MRkwFwYDVQQDExBBdmFzdCB0cnVzdGVkIENBMB4XDTE5 MDEyOTE0NTgwMFoXDTE5MDQyMzE0NTgwMFowaDELMAkGA1UEBhMCVVMxEzARBgNV BAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxEzARBgNVBAoM Ckdvb2dsZSBMTEMxFzAVBgNVBAMMDnd3dy5nb29nbGUuY29tMIIBIjANBgkqhkiG 9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5mxD4RN/4yh/H5VKmFWeQ94qiQswIrm+qbfb kQe1xx7xUufJa0cTeGOw4PQ/QGX4Zj0fYkPyf88WUqyUqgHszad71lzm34Tbiwwp 5gAS2U9KBDlZFnur3ToVagDWjeR+/I8PcijEAA7riLnmBh4cbnve3SNpLFL1blgh IFh9grYBm29LdU4d35vZ//KowP9oGttQrXpTRYyrcXvSmMenvNfkyn/fVQXa6Q+9 IBszYDsFJETvyc5yoRnn1XdAOIPG36EYel9mSBtGqnUIMlljJ4aWVk2K1GQGMIkI NaWNKzx2SbUQ8pjfKszvkO+PR4Ehq2l2cCR9LgZmWPIS+lCoQQIDAQABo10wWzAd BgNVHQ4EFgQUXBYCs2WCV3c7N9GGE8zUz6Ik19gwHwYDVR0jBBgwFoAUdWJFBxyu tGVDL9zdVr26UARhAfAwGQYDVR0RBBIwEIIOd3d3Lmdvb2dsZS5jb20wDQYJKoZI hvcNAQELBQADggEBAFzHUofzbkxAuMxV/q06XMktheYsjmaJhxzUWUG+Pja2CgSc wKGDxJ5J9LTrLd/cB5S0rmTcuz6nXtdOoScPovJ+FRCw6tV7CtZbkGwbnJK27KiV 98dkWlSvTlBatr2DN5vO06pnDy9r66pngP2Pb9mzL6EvF/SXDKwSoqBPvFxVbNGZ kbk3DcaDkN+f7l4nM96hpceB9zIqx56XIQy074njaQxZOlugtP6KNAQCJr5REIlc ijwQlYw+oNqUuZECKzqhmt1kJEUQSV7Kw2wp4AsV8wuiVqKChv7kkyMMce75JcTA +HBvmv9D7tj/+pIUM/cdvuZat4wioi84h+uMG+E=

END CERTIFICATE-----
philipp
philipp
  • Moderator
more options

thank you - it's apparently your avast security software tampering with secure connections. please try disabling the scanning of encrypted connections within avast...

Nick_R
Nick_R Question owner
more options

Thank you. I am impressed that you knew I had Avast on my computer! I have had it on my computer for a while, and have not changed any of the settings, so its behaviour is unusual.