Cumbersome online registration with unnecessary creation of a "great" Microsoft account that no one needs, then finding that you can not download the program, but can install it only online. Since I do not need it on the computer from which I bought it, only unsubscribe, log on to the other computer again. Cumbersome gehts never!
In addition, constantly new look and new "features". The old versions of Office to 2003 were good and intuitively operated via the threads themselves and for many years tended toolbar. No, that must boilers and get rid of it! Since Office 2007 you have to learn from scratch. Now even this nonsense with the completely exaggerated security and copy protection!
This was definitely the last Office, which I bought from Microsoft. There are better, which are free!