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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
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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
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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
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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
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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
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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.