Please note that Cloudflare no longer supports RC4 cipher suites. https://support.cloudflare.com/hc/en-us/articles/200933580-What-cipher-suites-does-Cloudflare-use-for-SSL- Ok, so Cloudflare is concerned with security and doesn't mind shutting the door on certain users, including institutions that haven't upgraded their systems. No workaround, right? Hmmm, so why does Firefox work when presumably it MUST use RC4?