Every time I try to connect to something it tells me that it has been configured incorrectly and it cannot give me a secure connection. It just started.
Every time I try to connect to something it tells me that the owner has configured their site incorrectly and a secure connection cannot be established. It just started doing this about 4 or 5 days ago. I am using the same connection I always have used. I have been using Firefox as long as I can remember. The other browsers connect to everything fine. I have started using Chrome because I can't get Firefox to work. Chrome works slower on my computer and I would like to go back to using Firefox.
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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
- configured their website improperly
How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites https://support.cdn.mozilla.net/media/uploads/images/thumbnails/2017-06-07-08-34-22-cb6da3.png
https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER
Can you attach a screenshot?
- https://support.mozilla.org/en-US/kb/how-do-i-create-screenshot-my-problem
- use a compressed image type like PNG or JPG to save the screenshot
You can click the "Advanced" button to expand this section and show extra details. You can click the blue error message to expand this section. If the certificate is not trusted (SEC_ERROR_UNKNOWN_ISSUER) then click "Copy text to clipboard" and paste the base64 encoded certificate chain text in a reply. That will allow us to check details like the issuer of the certificate.