: If you have a new product key, go to setup.office.com. Sign in with your Microsoft account and enter your 25-character key to link the software to your account.
To get the official Click-to-Run installer, you should use Microsoft's account-based portals: office 2016 professional plus click to run download
Microsoft transitioned to Click-to-Run to provide a faster and more secure installation experience. Install Office 2016 Professional 64 bit using Click to Run : If you have a new product key, go to setup
: Go to the Services & subscriptions page on the Microsoft Account Dashboard. office 2016 professional plus click to run download