To office install by product key, simply download the setup file from the setup.office.com website or use your installation disc. After starting the installation, enter your 25-character product key to authenticate and activate Office on your device.
Key Steps for Office Installation by Product Key
Download the Office installer from the office.com/setup website or insert your installation media.
Run the installer and choose the appropriate version of Office you want to install.
Enter your 25-character product key when prompted to activate the software.
Sign in to your Microsoft account to link your product key to your account.
Complete the installation by following on-screen prompts and setting up your Office apps.
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