To use a Microsoft Office product on your device, open any Office app such as Word or Excel and follow the on-screen steps to get started. If you do not have a product key, you can visit the Microsoft Store or office.com to purchase a genuine Office plan and sign in with your Microsoft account to complete the setup. If you already have a valid 25-character key, enter it when prompted to link the product to your account. Make sure you are connected to the internet and signed in with the correct Microsoft account, and avoid using unofficial tools, as they can be unsafe and illegal.



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