Insecure Connection
I've been trying forever to setup something as a shop using PayPal, however, whenever I go to PayPal's sandbox website to test a purchase, I am told it is an insecure website. I have tried to add an exception to the entire site itself, and it simply doesn't work. This is very annoying as I prefer FireFox, and I have had to resort using Chrome as a backup, which hogs computer resources and doesn't have any of my passwords saved, so it makes my process very long and tedious.
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There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connection certificates and send their own.
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
I don't have any anti-virus installed that could be doing this in the first place. I can attempt these fixes, but I, personally, do not see how they pertain to me as I don't have any security software installed.
What specific error page do you get? Is this SEC_ERROR_UNKNOWN_ISSUER or something else?
See also:
You can check if there is more detail available about the issuer of the certificate.
- click the "Advanced" button show more detail
- click the blue error text (SEC_ERROR_UNKNOWN_ISSUER) to show the certificate chain
- click "Copy text to clipboard" and paste the base64 certificate chain text in a reply
If clicking the blue error text doesn't provide the certificate chain then try these steps to inspect the certificate.
- open the Servers tab in the Certificate Manager
- Options/Preferences -> Privacy & Security
Certificates: View Certificates -> Servers: "Add Exception"
- Options/Preferences -> Privacy & Security
- paste the URL of the website (https://xxx.xxx) in it's Location field
Let Firefox retrieve the certificate -> "Get Certificate"
- click the "View" button and inspect the certificate
You can see detail like the issuer of the certificate and intermediate certificates in the Details tab.