Hmmm, I don't understand why, the second solution I gave (and the smart
one) use to work for my 2-3 first tests, and now it seems that my
console returns to the server language when I connect to it. Whenever I
change to another lang (for example Japanese), the login interface
starts in japanese, but when I login to my french instance, it return in
french. I'm pretty sure to had the console logged in japanese, english
then in german (to check the registry entry value), but It doesn't work
anymore...