Profile/Gamertag.

Actually, it is really easy to turn an offline profile into a gamertag with xbox live gold please review :support.xbox.com/.../offline-profile-to-gamertag

If a person searches for a gamertag's availability in their profile customization, it temporarily reserves that gamertag for a variable amount of time to that profile. For me, it's always from 15-40 minutes. I've searched for a gamertag's availability and
it says it's available on Profile 1. I make Profile 2 to change it to that gamertag but it doesn't work. But 20 minutes later when I try again to change it to that gamertag on Profile 2, it says it's available. Now this how it is for ME whenever I see a gamertag
I want on one profile and make another profile for that gamertag. They need to have a guideline in the gamertag customization, telling people what a taken and reserved gamertag mean, and more.

If he used random things like name like abcdefg or emails that is total junk you pretty much can forget about it

Important details must be matched

But if you talk to answers.microsoft.com and he be brutually honest there is a chance

If you go into your profile options on your Xbox, you'll be able to change your Gamertag to something that suits your tastes.

Things like known friends on his friends list

The console serial number he created the profile on

Date of creation

Original email

10 achievements listed on his profile

Original isp and ip address during creation

Name ans address and ohone number

Little details can help and possibily replace slightly mismatched details

But if your answers are far in left field and he used random details you will need a miracle