Clear cache/history and try again.

thanks but that didn't work. its a two day old computer so there wasn't much history or whatever. but it didn't work

Screenshot of the error.

Web search: https://www.bing.com/search?q=SSL_ERROR_DC_EXPIRED 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-firefox-did-not-connect https://support.mozilla.org/en-US/kb/websites-dont-load-troubleshoot-and-fix-errors [https://support.mozilla.org/en-US/kb/what-does-your-connection-is-not-secure-mean What do the security warning codes mean]

This is about Delegated Credentials. *https://blog.mozilla.org/security/2019/11/01/validating-delegated-credentials-for-tls-in-firefox/ You can check this pref on the <b>about:config</b> page and possibly disable this DC feature. *about:config => security.tls.enable_delegated_credentials = false *https://dc.crypto.mozilla.org/ ---- *https://support.mozilla.org/en-US/search?product=firefox&w=2&q=Delegated%20Credentials