Download and install or reinstall Office 2019, Office 2016, or Office 2013

Install Microsoft 365 for the first time

Some Office 2019, Office 2016, and Office 2013 products come with a product key. If yours did, before installing Microsoft 365 for the first time, sign in with an existing or new Microsoft account and enter your product key at office.com/setup. Redeeming your key is what links your account with Microsoft 365 so you only have to do this once. Already did this? Select the tab below for the version you're trying to install.

Reinstall Microsoft 365

If Microsoft 365 originally came pre-installed and you need to reinstall on it on the same device or a new device, you should already have a Microsoft account associated with your copy of Microsoft 365. This is the account you'll use to install Microsoft 365 following the steps below. If you need to uninstall Microsoft 365 first, see Uninstall Office from a PC or Uninstall Office for Mac.