To create a knowledge management system within a company is a very demanding goal. Organizations have to satisfy a lot of demands and prerequisites to make an operable system which can support management and which can realize business success. Knowledge management is influenced by organizational culture, by leadership and by people's attitudes - and this can obstruct knowledge acquisition and sharing, or can facilitate business success. It means that the business's ethical questions have to be managed and problems in this area have to be solved. Most companies do not deal with ethical questions. If they do deal with them, ethical problems will be the center of attention only in the external relationships of companies. According to a famous management slogan, "first we have to make order inside the company" (Oakley & Krug, 1997). Internal order will bring along order in external relationships, too. This means that you should make order first in your internal processes, systems and human relationships from the point of view of ethical problems. This paper approaches ethical problems theoretically, which can help in coming up with the creation and actuation of a knowledge management system to continue empirical surveys. These questions will be created at the end of this theoretical paper. On the basis of these questions it will be conducted an empirical survey at some companies. © Andrea Bencsik, 2011.