1. Obtain Your Product Key:
Purchase Office 2021 Professional Plus and find your 25-character product key in the confirmation email or packaging.

2. Download the Installer:
Go to Microsoft Office Setup, sign in, enter your product key, select Office 2021 Professional Plus, and download the installer.

3. Install Office 2021:

• Windows: Double-click the installer (.exe), follow the setup wizard, choose installation options, and complete the setup.


• Mac: Open the installer (.pkg), follow the wizard, select the installation location, and complete the setup.

4. Activate Office:
Open any Office app, sign in or enter your product key, and follow the instructions to activate.

5. Update Office:
Go to "File" > "Account" > "Update Options" > "Update Now" to ensure you have the latest updates.

Conclusion:
Setting up Office 2021 Professional Plus is quick and easy, providing you with a robust suite of productivity tools. For a detailed installation guide, visit our step-by-step guide.