Office Home & Business, Office Home & Student, and Office Professional can be installed on a single computer. If you try to install and activate these versions of Office on a different computer (owned by you or someone else), or on the same computer after a hardware change, you might see an error message that you have reached the maximum number of activations.
Note: If you own multiple one-time purchases of Office and are having trouble activating subsequent Office installs, see Change your Office product key.
If you follow the transfer terms in the Software License Terms, you can move Office to a different computer, but you must uninstall Office from the original computer.
If you haven't installed Office on another computer yet, follow the instructions in Install Office on your PC or Mac.
If you would like to reactivate your Office license on this device due to a configuration change, or transfer your Office license to this device, please select the contact support to transfer your license to this device link from the This product is already installed on another device window.
If you decide you need a new version of Office and want to compare prices, select the buy or try button below.
