Open any application of like (MS Word or MS. Excel) of Microsoft Office 2019.
After that, the users will be asked to activate the Office 2019 product.
Then, click on the “Activate” button.
After that, select your country and region and press the next button.
And then enter your product key in the space provided to the users.
After that, click on the "Next" button.
Now, select “Accept” and press next button.
Follow on-screen steps and at last tap on done.
Note: Visit
office.com/setup to get the product key.