Gamertag?

I'm trying to change my classic gamertag which is the one you see in games. My classic gamertag got changed and my Xbox One and Xbox App gamertag stayed the same (the Xbox One gamertag is the ones they added with the new gamertag system).

My Xbox One gamertag is different to my in-game gamertag and I want my classic gamertag to be changed. You can only change your classic gamertag on the Xbox One console, I have tried using the other ways and you can only change your Xbox Gamertag, not your
classic gamertag.

The reason I want to change my classic gamertag is that the classic gamertag can be fifteen characters and the Xbox One gamertag can only be 12 characters. If I use the other ways to change my gamertag it limits me to 12 characters and sets both my gamertags
to that.

I received a forced Gamertag change. Can XBLPET let me choose a new Gamertag for free?
Some rumors give the impression that XBLPET will provide a free Gamertag change to accounts that have received a forced Gamertag change. This is not the case.

In the past, a forced Gamertag change gave users the opportunity to change the offending Gamertag free of charge. Unfortunately, this gesture was prone to abuse, and many people simply chose new, equally offensive Gamertags. As a result,
the Gamertag enforcement process changed. A forced Gamertag change now automatically assigns a new Gamertag to the account, much in the same way a system-generated Gamertag is provided when you first sign up for Xbox Live.

If a player is unhappy with the assigned Gamertag and wishes to change it, he or she may purchase a new Gamertag through the

standard Gamertag change process.

The double gamertag is by design, as they transition over to the new gamertag system. Not all games will display the new gamertag system and as stated, your old gamertag will be displayed on 360 backwards compatible games. Any gamertag you create yourself,
is a custom gamertag.

These are the steps in order to change your gamertag.

1 On your console, sign in using the Xbox LIVE gamertag

2 Go to Social, and then select your gamertag.

3 Select Change Gamertag.

4 Select Enter New Gamertag.

Once you enter or select a new gamertag, select Yes, use this gamertag.

The gamertag system doesnt recognize things such as spaces or capitalizations in gamertag as making it unique. For example the gamertag system would look at "Gamertag" and "GaMeR TaG" as being the same.

In this case the gamertag "BierBuikBarry" is already in use as the gamertag "BierBuik Barry" with a space which is why it says "BierBuikBarry" is already taken. You would have to wait for "BierBuik Barry" to be inactive on all Microsoft services with that
gamertag for 5 years (starting in 2016) for the gamertag "BierBuik Barry" to be reset which would in turn free up the gamertag "BierBuikBarry" to be used. That would be the only way to get that gamertag.