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Learn how to download and install or reinstall Microsoft 365 or Office 2021 on your device. Follow the steps for your account type, system requirements, and activation process.
- Product Keys
These steps apply only to Office Professional Plus, Visio...
- Activate Office
If Microsoft 365 was pre-installed on your new PC, you must...
- Office Updates
Learn how to update Microsoft Office on PC and...
- Can't Find Your Office Apps
For Microsoft 365, Office 2021, Office 2019, or Office 2016,...
- Uninstall
To reinstall Microsoft 365 see Install or reinstall Office...
- How Do I Upgrade Office
Microsoft 365 Family or Personal. If you have a Microsoft...
- Install Project
Note: Some versions of Project don't have an associated...
- Set up Mobile Devices
Download and install Microsoft 365 or Office 2019 on your PC...
- Product Keys
Learn how to download and install or reinstall Microsoft 365 on your PC or Mac. Follow the steps to sign in, choose the language and bit version, and activate your product.
Learn how to reinstall Office products that don't require a product key or a Microsoft account from the Microsoft Store app on your Windows device. Follow the steps to download and install Office 2021 from the cloud.
Select the steps for the version of Office you want to install or reinstall. Close the uninstall tool. Microsoft 365 | Office 2021 | Office 2019 | Office 2016. If Office still won't install, check that your computer meets the system requirements to install Office.
If running Repair didn't help, use this tool to completely uninstall Microsoft 365 and then reinstall it. Select the button below to download and install the Office uninstall support tool. Download
Learn how to install, reinstall or activate Microsoft 365 or Office on your computer. Find links to download, reactivate or troubleshoot your product depending on your situation.
Step 1. Download the offline installer from your account portal. To download the offline installer, go to www.office.com. If you're not already signed in with the Microsoft account associated with your copy of Microsoft 365 or Microsoft 365 do that now.