Hi Dale, I don't think Edge has anything to do with it.

If a site shows "Access Denied" with a reference number, this is characteristic of a web application firewall trying to protect the site from attack or bot traffic. You wouldn't normally see this unless your IP address is on a block list, or something about your browser's requests looks suspicious.

Other than installing Microsoft Edge, have you made or noticed any other software changes recently? For example, changed or updated security software, proxy server, or VPN?

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

What do the security warning codes mean