Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

Use the Office offline installer to install Office 2016 or Office 2013 if you don't have an active Internet connection or you're having problems with slow speed or unreliable connections.

Install Microsoft 365 2019 or 2016 on a PC. Remember a one-time purchase version of Microsoft 365 is licensed for one install only. Depending on your browser, select Open file (in Edge or Internet Explorer), Setup (in Chrome), or Save File (in Firefox).

As you're getting your Microsoft 365 business subscription set up, you'll want to download and install your Microsoft 365 apps, like Word, Excel, Microsoft Teams, and PowerPoint, on your PC or Mac. Go to microsoft365.com and sign in with your Microsoft 365 account. Select Install apps.

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription.

Select the Office folder from the virtual drive. Double-click either the Setup32.exe to install the 32-bit version, or Setup64.exe to install the 64-bit version to begin the offline installation. If you're not sure which version is right for you, see Choose the 64-bit or 32-bit version of Office. The Installation dialog opens and starts ...

Office 2021 for Windows and Office LTSC for Windows are installed using the Click-to-Run installation technology instead of Windows Installer (MSI). Click-to-Run is used to install Office 2019 volume products and has been available with …

The issues you encounter when trying to install Microsoft 365, or Office 2021, 2019, or 2016 and how you fix them depends on whether your product is part of an Office for home or Office for business plan.

If your Office product doesn't include a product key and can be activated without your Microsoft account, you must reinstall Office from the Microsoft Store app. Reinstall Office 2021 from the Microsoft Store Library. Select Start and then open the Microsoft Store app on …

Learn how to update Microsoft Office on PC and troubleshooting tips for installing Office updates.