How to change Gamertag.

Here are instructions for changing your gamertag through GFWL -
www.gamesforwindows.com/.../How-to-Change-Your-Gamertag

Hello Ben,

Thank you for posting on the Xbox forums. We understand that you are interested in learning how to change your gamertag. The article entitled, "How
to change your Xbox gamertag" contains information on how to complete this process. Everyone gets one free gamertag change. If you gamertag was changed by the enforcement team, you will need to pay the fee for changing the gamertag. We hope this helps!

Details on how to change your gamertag can be found here How to change your gamertag

Hi and thanks for reaching out. I hope you’re doing well. I'm an Independent Advisor and a Microsoft user like you and I'll be happy to help you.

You can change your Xbox gamertag on the web, your Xbox console, and your Windows device. For more details and steps on how to do it, you may check out this link; https://support.xbox.com/help/account-profile/p....

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today M.

You can change your gamertag using a web browser, for this you just need to sign in with your here:
https://social.xbox.com/changegamertag > follow the on-screen instructions