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.
Enter the name you want, then choose Save. Some names may not be allowed if they contain blocked words or phrases. If you get an error when you enter your name, try a nickname instead.
Article ID: 4027722 - Last Review: 11 Aug 2017 - Revision: 1