activate using other options / delete any serial in the activation window - generate a new serial in the keygen and paste it into the MD activation window / choose "don't have any internet" / copy&paste the Computer ID from the MD activation window into the keygen / copy&paste the auth. code from the keygen into the MD activation window / click "activate"/ allow the activation routine to pass through your firewall (here it was only the local modem IP which was accessed) --> activated