firefox is useless - says EVERY site has bad certificate - even MOZILLA will not load

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Èsì tí ó kẹ́hìn lọ́wọ́ FredMcD

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14/4/2018 5:8

The owner of mozilla.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

The owner of www.google.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

The owner of www.msn.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

The owner of mozilla.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website. The owner of www.google.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website. The owner of www.msn.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

Ọ̀nà àbáyọ tí a yàn

There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connections and send their own certificate.

https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can

https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites

https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message

https://support.mozilla.org/en-US/kb/connection-untrusted-error-message

http://kb.mozillazine.org/Error_loading_websites

uses an invalid security certificate SSL_ERROR_BAD_CERT_DOMAIN
configured their website improperly

How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER

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Answer 1 · 2018-04-14 05:08:49

Shadow110

14/4/2018 5:12

Hi, sounds like some corruption in a file. Please : uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files , C:\Program Files(x86) & C:\ProgramData Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do :

Reinstall with Current Release Firefox 59.0.2 with a Full Version Installer