I believe this is the correct topic for the issue I'm experiencing. Since the last Firefox update, I'm now receiving feedback that Cloudflare is blocking webpages from being allowed to open. I use a secure external site for an application that is used. Yes, I've restarted the server - this is where this issue resides. I have also, uninstalled and reinstalled Firefox. There has been no hardware changes made to this server. The switches and routers are all working, I restarted each of these in the correct order. So I've ruled out my infrastructure as the cause. I've verified all of the Mozilla/Firefox services are started and running. Interesting fact, go back to old school and I can ping the website/page where the Cloudflare issue is appearing. This tells me the site is available outside of Firefox. Yes, I know I've broken Security within Firefox, just trying to figure out how to get around this issue and still use Firefox. I will turn things back on once I have this issue resolved. I've added the parent site to the Enhanced Tracking Protection. It only allows me to add the parent site and not any sub webpage, site.com/support not allowed. That did not resolve the issue. I turned off the DNS over HTTPS. This also did not resolve the issue. If I am not receiving the Cloudflare webpage, other generic browser pages will return Server Not Found. I'm not able to log into various accounts, including a special email account. To even access this form, I've had to go to an unsupported OS, as there were issues even having this form to even load. I will need to go to various workstations to see if they are having the same issue... My thinking is fix the server, I know the issue is here and hopefully the workstations will automatically be resolved. Some websites are loaded but only showing the XML, that is fine as I can read this. End User, this would be an issue for them. I prefer to use Firefox over other browsers but I feel my hands are now tied with not being able to access items I use to be able to access. I have had to switch to a much less favored browser to try and work around this issue. I know this issue has all occurred since the last update was automatically installed, something perhaps I should disable. Any thoughts or work around?