The purchase comes as always without a hitch on Amazon. However, the installation was not easy because the free switching code has not been adopted. The existing version (monthly subscription) has not been accepted. After I had repeatedly Office reinstalled, I tried Office with the now existing annual subscription subscription freizuschalten.Der code does not have to be entered, you need only log in to the account and user name. So we went well, but only after several attempts. Overall a difficult install, especially as the server from Microsoft were not working just quickly. I'm going to buy the next time a CD.