Activate Office - Microsoft Support
Learn how to activate Office that is pre-installed on new Windows 10 PCs or using a new product key.
Where to enter your Office product key - Microsoft Support
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.
Reactivate Microsoft 365 or Office - Microsoft Support
For Office 2021, 2019, or 2016 - Activate Office after reinstalling or installing on a different device.
Download and install or reinstall Office 2019, Office 2016, or Office ...
Microsoft 365 might activate automatically when you open an app, such as Word, for the first time. If it doesn't and you see the Microsoft Office Activation Wizard, follow the prompts to activate Microsoft 365 . If you need help with activation, see Activate Office using the Activation wizard.
Activate Office after reinstalling or installing on a different device
If you haven't installed Office on another computer yet, follow the instructions in Install Office on your PC or Mac. Follow the steps in Activate by telephone, described above. Uninstall Office from the original computer.
Use the Office offline installer - Microsoft Support
Step 2: Activate and update Office. After your Office installation is complete, you need to activate Office. Be sure you're connected to the Internet and then open any Office application, such as Word or Excel.
Activate Office for Mac - Microsoft Support
This article provides step-by-step instructions on how to activate Office for Mac. If you're running into errors or issues with installing or activating Office on your Mac, see What to try if you can't install or activate Office for Mac instead.
Download, install, or reinstall Microsoft 365, Office 2024, or Office ...
Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.
Unlicensed Product and activation errors in Office
If Office activation fails, you'll see Unlicensed Product or Non-commercial use / Unlicensed Product in the title bar of your Office apps, and most features of Office are disabled. To restore all features of Office, you'll need to fix the problem that's causing activation to fail.
Activate Office 2010 - Microsoft Support
Activate Office 2010 online. Click File > Help > Activate Product Key. If you don't see an Activate Product Key button, your software is already activated, and you don't need to do anything. Follow the steps in the Activation Wizard.