When you first configure Cortana on your Windows 10 device, you’ll be asked to register a username. Your username is also the name Cortana will call you by and it can be anything from your real name to a form of address or a nickname. If the need arises, you can change your Cortana username in a couple of easy steps.
How To Change Your Username in Cortana
Open Cortana, click on your Notebook > About Me > Change my name and type the new username in the What you would like me to call you? field:
Click on Enter and then proceed to the hearing test. Click on Hear how I’ll say it to hear how Cortana will pronounce your name. Click on Sounds good to save your new settings or click on That’s Wrong to enable your Microphone and teach Cortana how to pronounce your name correctly: