Open your browser and go to this URL: https://setup.office.com/
Sign in with your Microsoft account and enter the product key that will be sent to your email.
It will then give you the option to download Office 2019 Professional Plus.
Once downloaded, click on it and follow the steps of the office suite installation wizard.
When the wizard has finished, it is recommended to restart.
Once restarted we open for example the Word and go to the account section. At this point it is almost certain that you have already jumped a window that tells us that we must activate Office and give you to next.
If you go all normal Office will be activated.
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