If you've purchased Microsoft 365 or Office 2024, activation is key to accessing apps like Word, Excel, PowerPoint, and Outlook. It ensures your copy is genuine and linked to your Microsoft account. Whether you're installing for the first time or reinstalling, you can quickly activate Office using your product key at Office.com/setup.

How to Activate Microsoft Office Using a Product Key

Find Your 25-Character Product Key:

• Format: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. This may be in your product box, email, or purchase receipt.

Go to Office.com/setup:

• This is the official Microsoft site for entering your product key and starting activation.

Sign In with a Microsoft Account:

• Use your existing account or create a new one. This account links your license to your personal or business profile.

Enter the Product Key:

• Carefully input your Office key. Double-check for typos and avoid extra spaces.

Download and Install Office:

• Choose your device type (Windows or Mac), then download and run the installer.

Launch an Office App to Activate:

• Open apps like Word, Excel, or PowerPoint and sign in. Your Office product will be activated automatically.

Keep a Record of Your Product Key:

• Save your product key for future use (reinstallation or troubleshooting).

Need Help?

• If your product key doesn’t work or shows an error, visit Microsoft Support.

Troubleshooting Activation Issues

If your product key doesn't work:

• Double-check for typos.
• Make sure it hasn't already been used.
• Confirm you're using it on the correct Microsoft website.