Gamertag showing ID numbers all the time.

I'm Samy an independent advisor. Welcome to the Xbox community. How are you?

The numbers are to differentiate you from the person who originally owned the Gamertag. If the numbers didn't show up, anyone could impersonate someone else.

If you don't want the numbers on your Gamertag, you'll have to switch to a Gamertag that no one else is using.

This is part of new update which gives you a unique id not all games will show numbers

The new gamertag system is still rolling out. Some games will show the numbers while others will not. For the time being, the numbers will be visible and part of the gamertag.

The only way to get a tag without numbers is to be the first person to have the gamertag.

More information on the new gamertag system and the transition time of games over to it can be found at https://beta.support.xbox.com/help/account-profile/profile/gamertag-update-faq

No. It means if you change your gamertag, the new one may not show up the same way you enter it in all games. If you get a tag with the suffix (# and numbers) the # will be removed and the numbers will show as part of the tag. Or if you have a gamertag with special characters, your old tag may show up.

Tried, now saying this windows live id is associated with a different gamertad. Enter another windows live id and password. We deleted the gamertag on the console but when pulling it up on the computer, the gamertag is still showing to this id.