Browser error: There is something wrong with Firefox.Unsupported protocol: The protocol that your browser is using is not supported by the server.

Why does “Performing a TLS handshake” show up? There are various reasons and they are: Read More: how to fix tls handshake firefox Causes for “Performing a TLS Handshake” That’s why a page won’t load when a TLS handshake failure happens. A TLS handshake is an exchange of information between a client (the browser you are using) and a server (the website you are attempting to connect to).

TLS is the abbreviation of Transport Layer Security. This guide focuses on the Firefox TLS handshake failure error, explaining what the error does mean, analyzing the causes for the error, and providing solutions to the error.