Sign in with your Microsoft ID.
Enter the 25-character Office product key.
Click Next and complete the activation.
Once redeemed, the Office license will be linked automatically to that Microsoft ID.
Sign in with the same Microsoft ID.
Find Microsoft Office / Microsoft 365 in the list.
Click Install.
Open the downloaded OfficeSetup.exe.
Allow the installation to complete.
Open any Office app (Word / Excel).
Sign in with the same Microsoft ID to activate.
✅ Office is now installed and activated on the laptop.