Regeln » office.com/setup | Enter Your Key to Install Office Setup

If you have an existing Microsoft Office account, then you can just proceed by submitting the valid login credential. In case, if you do not have an existing Microsoft account, then create one. If you have your product key and you want to activate and set up Office, then you need to go to www.office.com/setup and install the setup. Just wait for some moments and the installation process will start automatically.