The software package Microsoft Office is available for students (Office 365 ProPlus) and memebers of the stuff (Office Profession Plus 2019) at the Heinrich-Heine-Universität free of charge.
Students have to register at https://bildung365.de/ (5 €/year). Detailed information are available at:
Coworker have to register at Asknet.
In order to use Microsoft office you have to register with Asknet.