To activate the Microsoft Office, you are required to enter the product key. You will get the product key on the basis of your Office version. In case you have purchased a retail office.com/setup, then the activation key will be available inside the package. On the other side, the key will be sent to your registered email address if you brought an online version through www.office.com/setup . Here is the full breakdown of how the client can activate the Office on the desired system.

It instals all utilities in MS word,powerpoint,Excell

Setup and Installation:

Sign In with your Microsoft Account at Office 365 Login | Microsoft Officesetup.
Enter your 25 Alphanumeric Product Key.
Select the Install Office, Your Office file will start downloading.
Run the File, Grant User Control Access by clicking Yes.
Another Dialogue might Appear. Click Yes again.
“You're all set!

You can easily install the MS Office software through the guidelines provided here. The complete installation procedures are check out this site available online and with the help of product key, you can easily install it. The support team are always there to solve any kind of issues.