Download and install or reinstall Office 365 or Office 2016

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

Note: These steps assume you already have an account associated with Office and you’re trying to install Office 365 or Office 2016. If you’re looking for an older version of Office or you’re having trouble with your account, email for assistance.


Quick Install

Screenshot showing home page with Install Office button

  • Go to and if you’re not already signed in, select Sign in.
  • Sign in with the account you use with Office. This can be your Microsoft account, or a work or school account. Can’t remember your account?
  • Select Install Office.

Tip: This installs the 32-bit version of Office on a PC, (64-bit on a Mac). To install the 64-bit version on a PC, follow the steps for your product on the PC step-by-step tab above.


PC Step-by-Step Install

Screenshot showing to select a language and then select Advanced Select 64-bit from the Version drop-down list

Important: If you currently have the 32-bit version of Office installed on your PC, you’ll need to uninstall that version before you can proceed with installing the 64-bit version and vice versa.


  • Depending on your browser, click Run (in Edge or Internet Explorer), Setup (in Chrome), or Save File (in Firefox).

    If you see the User Account Control prompt that says, Do you want to allow this app to make changes to your device? Click Yes.

    The install begins.

  • Your install of Office 2016 is finished when you see the phrase, You’re all set! Office is installed now and an animation plays to show you where to find Office applications on your computer. Follow the instructions in the window, for example Click Start > All Apps to see where your apps are, and select Close.

Office is installed now. Select Close

Start using an Office application right away by opening any app such as Word or Excel. In most cases, Office is activated once you start an application and after you agree to the License terms by clicking Accept.

Accept the License Agreement terms by clicking Accept

Mac Step-by-Step Install

  • Sign in with your work or school account at
  • On the Office page page, under Install Office 2016 for Mac, select Install to begin downloading the installer package.

The Office 365 Settings install software screen on a Mac


  • Once the download has completed, open Finder, go to Downloads, and double-click Microsoft_Office_2016_Installer.pkg. (The name might vary slightly.)

The Downloads icon on the Dock shows the Office 365 installer package

Tip: If you see an error that says the Microsoft_Office_2016_Installer.pkg can’t be opened because it is from an unidentified developer, wait 10 seconds and then try double-clicking the installer package again. If you’re stuck at the Verifying…. progress bar, close or cancel the progress bar and try again.


  • On the first installation screen, select Continue to begin the installation process.

First Mac 2016 installation screen with "Continue" highlighted


  • Review the software license agreement, and then click Continue.
  • Select Agree to agree to the terms of the software license agreement.
  • Choose how you want to install Office and click Continue.
  • Review the disk space requirements or change your install location, and then click Install.

Note: If you want to only install specific Office apps and not the entire suite, click the Customize button and uncheck the programs you don’t want.


  • Enter your Mac login password, if prompted, and then click Install Software. (This is the password that you use to log in to your Mac.)

Enter your admin password to begin installing


  • The software begins to install. Click Close when the installation is finished.

Shows the final page of the installation process, indicating that the installation was successful.


Step 2: Launch an Office for Mac app and start the activation process


  • Click the Launchpad icon in the Dock to display all of your apps.

Shows the Launchpad button in the Dock


  • Click the Microsoft Word icon in the Launchpad.

Shows the Microsoft Word icon in a partial view of the Launchpad


  • The What’s New window opens automatically when you launch Word. Click Get Started to start activating.

Start activating Word 2016 for Mac

Installation notes

Keep in mind:


You may need to check in with your organization’s technical support team before installing apps.


Can I install Office 2016 for Mac and Office for Mac 2011 on the same computer?

Yes, you can install and use Office 2016 for Mac and Office for Mac 2011 at the same time. However, we recommend that you uninstall Office for Mac 2011 before you install the new version just to prevent any confusion.

How do I pin the Office app icons to the dock?


Go to Finder > Applications and open the Office app you want.


In the Dock, Control+click or right-click the app icon and choose Options > Keep in Dock.

Open app Options menu showing the Keep in Dock command


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