During my SQL Server 2014 Enterprise installation efforts, I encountered an error near the end of the install that has prevented completion.
A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: SSL Provider, error: 0 - The certificate chain was issued by an authority that is not trusted.).
There is currently no cert on the server so it looks as though SQL Server has generated a self signed cert to connect with, but isn't being trusted.
Note that all this is happening before the install is complete, so configuration manager isn't available yet. My thought is to turn encryption off, but with no config manager, I am not sure where there may be a config file for the install somewhere that I can edit. Or maybe I would need to put a trusted cert on the server, but without configuration manager fully available, there isn't a way to tell SQL Server to use this the trust cert.