"Upon further investigation between your screenshot, mine and another server I completed, I believe I might have the answer. Firefox does not natively support cipher suite encryption levels above SHA. The server having the issues has the SHA suite completely disabled leaving 256bit keys and above enabled, even with the AES 128 wrapper on a couple of the suites. I will make this change tonight and verify if this is the answer." https://support.mozilla.org/en-US/questions/1121392 This is related to this question above. Has firefox released an update to this yet? Do they support sipher suite encryption levels above SHA1? Our company's website has to be PCI compliant and since meeting PCI standards, we get a "Secure Connection Failed" error only in firefox when loading our site.