To use Microsoft 365 on your new device, you can activate Microsoft 365 as a 1-month trial of Microsoft 365 Family. You can also buy Microsoft 365 or a non-subscription version of Office, add Microsoft 365 to an existing Microsoft 365 subscription, or enter a product key from a new product key card.

Office might activate automatically. However, depending on your product you might see the Microsoft Office Activation Wizard. If so, follow the prompts to activate Microsoft 365 . If you need activation help, see Activate Office.

If you need help activating Microsoft 365 or Office, see Activate Microsoft 365 or Office for Mac. If activation fails, see What to try if you can't install or activate Microsoft 365 or Office for Mac.

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 says you've reached the maximum number of activations.

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

Find your Office product key. Many tasks for Office products don't require a product key because your Microsoft account takes care of them instead. Using product keys with Office.

For Access 2007, for Excel 2007, for PowerPoint 2007, and for Word 2007, there are two methods to access the Office Activation Wizard. These methods are as follows: Start an Office program that has not been activated. Click Activate on the Resources tab.

If you keep getting prompted to activate Office Standard or Office Professional Plus on a new PC, you can update the registry to stop the prompts.

An activation code (also known as an activation key) is used to activate the software after installation. Activation ensures that the software is genuine and legally licensed. Unlike a product key, which is entered during installation, the activation code is applied after installation.

A Windows product key is a 25-character code used to activate Windows. It looks like this: Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.