It's not my internet connection. Followed available restart device, refresh, clear cache/cookies, run in troubleshoot mode, and reinstall web browser steps and same issue persists while VPN/firewall active or not. When I try to restart it says another Firefox window is open, when I try to reinstall it states that an error occurred with a previous installer, etc. It's annoying (lol). Can provide main issue in an attachment, currently operating from MS Edge Browser on affected device as no web pages populate on the Firefox browser (even Mozilla.org support sites/articles). Advice would be welcome, thanks!