Step 1: Go to office.com/setup

Step 2: Sign in with your Microsoft account, or create one if you don't have one. Be sure to remember this account so that you can install or reinstall Office later, without a product key.

Important: If you're renewing an Office 365 subscription, enter the Microsoft account that's associated with your subscription. I can't remember my Microsoft account.

Step 3: Enter your Office product key, without hyphens.

Step 4: Follow the prompts to finish the redemption process.
For more info do visit:-
norton.com/setup
office.com/setup
mcafee.com/activate

Mcafee setup provides you’re the highly secure antivirus software that protects your PC and Laptops from threats, viruses, and Malware. install the software on your
Devices by visiting.
mcafee.com/activate

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