To activate office via product key, enter the unique product key provided during installation or purchase on Microsoft365.com/setup. This key validates your license, allowing you to access the full functionality of Office applications like Word, Excel, and PowerPoint.
Steps to Activate office via product key
- Launch office.com/setup (e.g., Word or Excel).
- Sign in with your Microsoft account or select "Activate" if prompted.
- Enter the 25-character product key when prompted.
- Complete the activation by following the on-screen instructions.
