the latest version has been rejected by three sites for lack of security
ref: cvs.com
"You are using an Internet browser with an outdated version of Transport Layer Security (TLS). In order to view and use our website, you must enable TLS 1.1 in your current browser, and/or update to a newer browser version that offers TLS 1.1 or higher.
We apologize for any inconvenience, but this is essential part of keeping our customers’ information secure and private.
Mozilla Firefox
Open the browser Type “about:config” in the address bar and press Enter. Scroll to “security.tls.version.max” and select it. Press enter to open a popup for the integer value. Type “3” and press OK."
Did this only to find that all appeared to be in order. FF works on android, just not on laptop.
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https://www.ssllabs.com/ssltest/analyze.html?d=www.cvs.com&hideResults=on
The https://www.cvs.com/ gets a very good rating as a secure site and Firefox should work on it just fine.
Why it is not for you could be for different reasons.
Date/time is incorrect on OS, a proxy in use, a antivirus trying to be helpful by inserting its own certificate which instead often times causes this issue.
https://support.mozilla.org/en-US/kb/what-does-your-connection-is-not-secure-mean https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER
この投稿は James (doing minimal support) により に変更されました