I run the offline installer select English but then nothing happens, for about 15 mins there is a process running called Objectif Lune Connect Pre Install but that ends with nothing happening.
My server is 2012 R2 64 bit and has no internet connection but I have installed the Go-Daddy certificates
this is a known issue and is related to one or several certificates missing on your computer. We have a PDF available, which describes, how to check all this and fix it. If you tell me your mail address, I’ll send it to you.