Download and install or reinstall Office 365 or Office 2016 on a PC or Mac

Before you begin, make sure your computer meets the system requirements.

NOTE: If you got Office through your company’s Microsoft Home Use Program benefit, see Install or reinstall Office through the Home Use Program (HUP).

Looking for product details and prices?

Link to buy or try Office -

Install or reinstall Office

Do you have a product key? If you have a product key for Office 365 or Office 2016 be sure to redeem it first. (Not all versions of Office include a key, see an example key.) To redeem, go to, sign in with an existing Microsoft account or create a new one. Next, enter your product key and then follow the remaining setup steps to link your account to Office. You’re now ready to install the latest version using the steps below.

TIP: To install the 64-bit version of Office, follow the more detailed Step-by-step instructions at the bottom of this page.

Go to and sign in with the Microsoft account, or the work or school account you use with Office.

Screenshot of sign in page for installing Office -

TIP: If you can’t remember your account information, see I forgot the username or password for the account I use with Office.

Select Install Office.

Screenshot showing Install Office button -

TIP: You may have to wait a few seconds before the Install Office button appears in the upper-right corner.

PC install:
Depending on your browser, click Save, Run, Setup, or Save Filefrom the bottom of your screen.

Mac install:
Open Finder >Downloads. Double-click Microsoft_Office_2016_Installer.pkg.

Want to reinstall or install Office on another computer? Go back to Step 1. Still having trouble installing? Try using the Step-by-step instructions below.

Step-by-step instructions for installing Office on a PC or Mac

The following steps includes instructions for installing or reinstalling Office in a different language, and installing the 64-bit version of Office on a PC. (Office 2016 for Mac only installs a 64-bit version).

The steps below differ if your Office product is part of an Office for home or Office for business plan so select the correct tab for your product.

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