1- If i upgrade my active Win10 pro from 'English' to 'french' in the same edition, do i loose my activation statue ... If It is, how to do it without loosing my active statue version. 2- On clean installation can i use the same authentic key win 8.1 'english' version, use it to upgrade it to win 10 pro 'french' version. How to pass from 'english' full pro version to 'french' pro full version without using language pack, proposed by MSWin, ... Th'x for answers / suggestions
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