Applies to Windows 10 and Windows 10 Mobile
Sign in to the Your info page on the Microsoft account website.
Under your name, select Edit name. If there’s no name listed yet, select Add name.
Edit or add the name you want, then choose Save. Your Microsoft account name will start to appear or change everywhere you use it.
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Get help with the most common problems other people have had with Windows 10.
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Whether you’re brand new or just want a refresher, get info on the basics of Windows 10.