I can't enter the Xbox app with my new account

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 despite this Milonja

Please try creating a new user in your PC and link the recently created account to that user

https://support.microsoft.com/en-us/windows/add...

After that restart your PC and give it a new try

Let me know how it goes

Hello T0RMINAT0R333,

Lets see if we can't get you sorted out.

Some apps (like the mail apps on some smartphones) or devices
(like the Xbox 360, for example) can't prompt you to enter a security code when you try to sign in. If you get an incorrect password error with an app or device, you'll need to create a unique app password to sign in. Once you've signed
in with your app password, you're all set to use that app or device. You will use this new app password to sign in to your device going forward instead of your Microsoft account password.

You'll need to create and sign in with an app password once for each app or device that can't prompt you for a security code.

1. Sign in to your Microsoft account.
   
2. Under Password and security info, tap or click Edit security info.
   
   If you're prompted for a security code here, enter it and tap or click Submit.
   
3. Under App passwords, tap or click Create a new app password.
   
   A new app password is generated and appears on your screen. (write this down)
4. On your Xbox, enter the app password displayed on the screen when asked for your Microsoft account password.
   

Let us Know if this gets you gaming.

Lets see if we can't get you sorted out.

Some apps (like the mail apps on some smartphones) or devices
(like the Xbox 360, for example) can't prompt you to enter a security code when you try to sign in. If you get an incorrect password error with an app or device, you'll need to create a unique app password to sign in. Once you've signed
in with your app password, you're all set to use that app or device. You will use this new app password to sign in to your device going forward instead of your Microsoft account password.

You'll need to create and sign in with an app password once for each app or device that can't prompt you for a security code.

1. Sign in to your Microsoft account.
   
2. Under Password and security info, tap or click Edit security info.
   
   If you're prompted for a security code here, enter it and tap or click Submit.
   
3. Under App passwords, tap or click Create a new app password.
   
   A new app password is generated and appears on your screen. (write this down)
4. On your Xbox, enter the app password displayed on the screen when asked for your Microsoft account password.
   

Let us Know if this gets you gaming.

Hello,

I turned on two-step verification. How do I sign in to an app or device that doesn’t prompt for security proofs?
Some apps (like the mail apps on some smartphones) or devices (like the Xbox 360) can't prompt you to enter a security proof when you try to sign in. If you get an incorrect password error with an app or device, you'll need to create a unique app password
to sign in.

After you sign in with your app password, you're all set to use that app or device. You will use this new app password to sign in to your device instead of your Microsoft account password.

You'll need to create and sign in with an app password once for each app or device that can't prompt you for a security proof.

1. Sign in to your Microsoft account.
   
2. Under Password and security info, tap or click Edit security info.
   
   If you're prompted for a security proof, enter it and tap or click Submit.
   
3. Under App passwords, tap or click Create a new app password.
   
   A new app password is generated and appears on your screen.
4. On your Xbox console, when you are prompted for your Microsoft account password, enter the app password that is displayed on the screen.
   

Hope this helps

now though if you set up your account for two step verification then it wont work do this:

If you recently turned on two-step verification, you may not know how to sign in to apps or devices that don't accept security codes. Some apps (like the mail apps on some smartphones) and devices (like the Xbox 360) can't prompt you to enter a security
proof when you try to sign in. If you get an incorrect-password error with an app or device, you'll need to create a unique app password to sign in. After you sign in with your app password, you're all set to use that app or device. You’ll use this new app
password to sign in to your device instead of using your Microsoft account password.

You'll need to create and sign in with an app password once for each app or device that can't prompt you for a security proof.

Sign in to your Microsoft account.

Under Password and security info, tap or click Edit security info.

If you're prompted for a security proof, enter it and tap or click Submit.

Under App passwords, tap or click Create a new app password.

A new app password is generated and appears on your screen.

When you’re prompted for your Microsoft account password on your Xbox console, enter the app password that you created online.