When you first install Windows 10, you either create a local user account or Microsoft account. For local accounts, you must specify a name whereas for Microsoft accounts, it takes the name from your online profile which you can manage by going to account.microsoft.com. Your user name also becomes your logon name. Also, a separate display name is generated based on the name you typed. Usually, your first name becomes the logon name and your full name is stored as the display name. You can easily change both - your display name as well as your logon name without creating a new user account. Let me show you how it's done.
When you first install Windows, it prompts you to create a user account and choose a name for it. This becomes your logon name (also called as the user name). Windows also creates a separate display name for you. If you type your full name when creating an account, Windows creates a logon name based on the first name and your full name is stored as the display name. You can easily change your display name from the User Accounts Control Panel but what about the logon name? You can change the logon name too without having to create a new user account but the way to change it isn't so obvious. Here is how to do it.