"You don't have permission to access..." errors are characteristic of a firewall that protects the server against misuse and this firewall thinks something is suspicious about the HTTP request. If you use a proxy or VPN then try to use a direct connection. Select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly. *Settings -> General -> Network -> Connection -> Settings You can try to clear the Cache and remove the Cookies for websites that cause problems via the padlock button or via "3-bar" Firefox menu button (Settings) to see if that fixes it. *https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can I've seen cases where having enabled Resist Fingerprinting was causing this issue. *https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting Start Firefox in <b>Troubleshoot Mode</b> to check if an extension is causing the problem. *https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode If this all doesn't work then you can try "Forget About This Site" in the right-click context menu of an history item. Note that this removes saved passwords for this website as well. *https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox

It seems UBlock Origin is causing the issues. It is blocking 11/16 domains Navy Federal . org is trying to open. When I have more time, I'll try again. Troubleshooting mode did allow me to log in. Thank you so much for taking the time to help me. Best Regards.