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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.
- 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
Excel for Microsoft 365 Word for Microsoft 365 Outlook for...
- Can't Find Your Office Apps
See how to add your desktop icons and find Office apps in...
- Uninstall
Uninstall Microsoft 365 for your installation type. The...
- 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
Windows 365; Microsoft Industry; Small Business Developer...
- Product Keys
Reinstall Microsoft 365. If Microsoft 365 originally came pre-installed and you need to reinstall on it on the same device or a new device, you should already have a Microsoft account associated with your copy of Microsoft 365. This is the account you'll use to install Microsoft 365 following the steps below.
Download and install or reinstall Microsoft 365 or Office 2021 on a PC or Mac. Set up Office apps and email on a mobile device. Small business help and learning. Learn how to download and install apps you need from your Microsoft 365 business subscription.
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.
Download the latest version of Microsoft Office for Windows PCs. Microsoft Office provides the best experience for work, creation, and collaboration.
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 your Windows device.
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