Download, install, or reinstall Microsoft 365, Office 2024, or Office 2021 on a PC or Mac
Applies To
Tip:
Get expert advice, dedicated support, and personalized guidance from business specialists. With Business Assist, get help making Microsoft 365 products work for you and everyone in your business.
Ready to install?
Before you begin, make sure your PC or Mac meets the system requirements.
If you already redeemed a product key, you're simply reinstalling the apps, or you know you have an assigned license through work or school, you can skip ahead and go to the section sign in to download and install Microsoft 365 or Office. However, if this is the first time you're installing Microsoft 365 or Office, you may have some steps to do first. Expand the Learn more section below for more info.
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Sign in to download and install Microsoft 365 or Office
Tip: Get tech expertise with Business Assist. Connect with our small business advisors for help making Microsoft 365 products work for you and everyone in your business. Learn more.
Sign in to download Microsoft 365 or Office
Go to www.office.com and if you're not already signed in, select Sign in.
Note: If you're using Microsoft 365 operated by 21 Vianet, sign in with your work or school account to login.partner.microsoftonline.cn. If you're using Microsoft 365 Germany, sign in with your work or school account to portal.office.de.
Sign in with the account you associated with this version of Microsoft 365. This account can be a Microsoft account, or work or school account. I forgot the account I use with Office
After signing in, follow the steps that match the type of account you signed in with.
You signed in with a Microsoft account
From the Microsoft 365 home page select Install apps.
Select Install (or depending on your version, Install apps>).
You signed in with a work or school account
From the home page select Install apps (If you set a different start page, go to aka.ms/office-install.)
Notes:
For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn/account.
For Microsoft 365 Germany go to portal.office.de/account.
Select Microsoft 365 apps to begin the installation.
The 64-bit version is installed by default unless Microsoft 365 or Office detects you already have a 32-bit version of Microsoft 365 or Office (or a stand-alone app such as Project or Visio) installed. In this case, the 32-bit version of Microsoft 365 or Office will be installed instead.
To change from a 32-bit version to a 64-bit version or vice versa, you need to uninstall Microsoft 365 first (including any stand-alone Microsoft 365 apps you have such as Project of Visio). Once the uninstall is complete, sign in again to www.office.com and select Other install options, choose the language and version you want (64 or 32-bit), and then select Install. (See Install Visio or Install Project if you need to reinstall those stand-alone apps.)
Notes:
For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn.
For Microsoft 365 Germany go to portal.office.de.
This completes the download of Microsoft 365 to your device. To complete the installation, follow the prompts in the "Install Microsoft 365" section below.
Tip: 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 solutions under Account questions.
Install Office
Depending on your browser, select Run (in Microsoft 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? select Yes.
The install begins.
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 Microsoft 365 applications on your computer. Select Close.
Installation or sign in issues?
Tip: For help with Microsoft 365 or Office 2021 installation issues on a PC, please go to Microsoft 365 troubleshooters and select the Microsoft 365 setup troubleshooter option.
If you're having an installation issue such as Microsoft 365 taking long to install, try Need help? for a list of common issues.
Activate Microsoft 365 or Office
To open an app, select the Start button (lower-left corner of your screen) and type the name of an app, like Word.
If you have Windows 8.1 or 8.0, type the name of an Microsoft 365 app on the Start screen. Can't find your Office apps?
To open the app, select its icon in the search results.
When the app opens, accept the license agreement. Microsoft 365 or Office is activated and ready to use.
Note: The Activation Wizard appears if Microsoft 365 or Office has trouble activating. Complete the steps in the wizard to finish activation.
Tip: If you're a small business owner looking for more information on how to get Microsoft 365 set up, visit Small business help & learning.
Recommended articles
Download and install or reinstall Office 2019 or Office 2016
How to use the PC Health Check app
I forgot the account I use with Office
Change from a 32-bit version to a 64-bit version or vice versa
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