IMPORTANT: It is not a key that you put in your microsoft account, you must download office and install it, after that, you will enter the activation key directly in office installed in your pc.
1- Download your Office package from the Microsoft website with your language.
2 – Once downloaded, right click on it and select “Mount” or extract with winzip.
3 – This following folder will open, then double click on “setup.exe”
If you see the User Account Control prompt that says: Do you want to allow this app to make changes to your device? Select Yes.
4 – The installation begins
5 – Your installation is complete when you see the phrase, “You are ready! Office is installed now” and an animation plays to show you where to find Office applications on your computer. Select Close.
Congratulations! your Microsoft Office Pro Plus 2021 is now installed. Open for example “excel” another popun will be opened and ask for the product activation key.