Learn how to activate Office that is pre-installed on new Windows 10 PCs or using a new product key.

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 …

Alternatively, if you have successfully installed Microsoft 365 or Office on your computer, but need help with activating or reactivating it, please go to: For Microsoft 365 - Activate Office.

Learn how to install, reinstall, or activate Microsoft 365 or Office 2024 on a PC or Mac.

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 …

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.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Provides general information about the Office Activation Wizard and the reduced-functionality mode in Office XP, in Office 2003, and in Office 2007.

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 …

If you need help activating Office , see Activate Office for Mac. If Office activation fails, see What to try if you can't install or activate Office for Mac.