Diego Dupin added a comment - 2017-03-02 15:06 - edited There is 2 differents problems concerning password encoding : password are crypted in some hash based on password current passwords bytes value, that is charset connection dependant (current @@character_set_client). java driver send password crypted hash base on from password byte array. this array is using String.getBytes(), so depending on Charset.defaultCharset(), that is os dependant. Client side, adding passwordCharacterEncoding option will permit to handle that.