Office.com/setup
Enter your office setup product key
Office.com/setup - Microsoft official website to start office 365 subscription or download office 2019. With office.com/setup you can download latest version, install, reinstall office setup.
Download Office from office.com/setup
Type Office.com/setup in browser
Click sign in and enter your email address, password
Enter 25 digit product key
Choose language and country of billing
Click Redeem
Choose your product and then click install
Download process will start.
Update Office from Office.com/setup
Go to office.com/setup
Sign in with Microsoft Account
Click Get your software
Click Install to download updated version
Run .exe it will auto update the Office version
Renew Office from office.com/setup
Go to office.com/setup
Sign in with Microsoft Account
Click on Myaccount
Click on Renew Office Setup
You will be charged for subscription