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Office user guide.

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

Before you begin, make sure your PC or Mac meets the system requirements.

Office for home Some Office for home products come with a product key. If you have a key, your first step is to sign in at office.com/setup with an existing or new Microsoft Account and then enter your product key. See I have a new product key. Where do I enter it?

Office for business If your Office for business subscription plan includes the desktop version of Office and your organization allows you to install it, you also need an assigned license. Learn how to check this in What Office 365 product or license do I have?

Install on a PC
Step 1 – Sign in to download Office
Go to www.office.com and if you’re not already signed in, select Sign in.

Note: If you bought Office for personal use through your company’s Microsoft HUP benefit, you may not be able to sign in here. Find installation help at Install Office through HUP.

Sign in with the account you associated with this version of Office. This account can be a Microsoft account, or work or school account.

Forgot your account details? See I forgot the account I use with Office.

On the Office home page, do the following depending on your version of Office.

If you signed in with a Microsoft account, from the Office home page select Install Office > Install. (Office 365 subscribers should select Install again).

Screenshot of Office.com home page after signing in
Tip: To install Office in a different language, or install the 64-bit version (if you’re on a PC), select the link Language, 32/64-bit, and other install options. Choose the language and bit version you want and then select Install.

If you signed in with a work or school account, from the Office 365 home page select Install Office apps > Office 2016. (If you set a different start page, go to aka.ms/office-install.)

Screenshot of Office.com if signing in with a work or school account
Tip: To install Office in a different language, or install the 64-bit version (if you’re on a PC), from the Office 365 home page, select Install Office apps>Other install options > Advanced. Choose the language and bit version you want and then select Install.

This begins the download of Office. Follow the prompts on your screen to complete the install.

Don’t see an install option after signing in? There could be an issue with your account. Select Need help? from above and review the section Account questions.

Step 2 – Install Office
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.

Window showing progression of Office install

Your install 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

Installation or sign in issues?
If you’re having installation issue such as Office taking long to install, try Need help? for a list of common issues.

Step 3: Activate Office
Start using an Office application right away by opening any app such as Word or Excel. Can’t find Office after installing?

In most cases, Office is activated once you start an application and after you click Accept to agree to the License terms.

Shows the “Office is Almost Ready” page where you accept the License Agreement and start the app

Office might activate automatically. However, depending on your product you might see the Microsoft Office Activation Wizard. If so, follow the prompts to activate Office.

Shows the Microsoft Office Activation Wizard

If you need activation help, see Activate Office 365, Office 2016, or Office 2013.