I want to buy something for xbox store but it wont let me,because it says that i need an...

Same problem here. My xbox 1 pins wont work it says like pins aren't avible and no store either. But your can access store by saying "Xbox go to store" But i recommend not buying anything till problem is full solved because don't wanna buy something and
it wont work.

Hi Lieutenant_1,

Thank you for posting in Microsoft Xbox Community. I'm sorry to hear that you're having issues purchasing from Xbox store due to an error about your age.

If you are an adult but have the wrong birth date on the account, you need to change the account information as if you were a child.

Sign in to your Microsoft account, as if you were a child

https://go.microsoft.com/fwlink/?linkid=2253028

Select Learn more about parent/guardian consent at the bottom of the information prompt.

On the next screen, click Update account information .

If prompted, enter your name and click Update .

Next, you will see the screen to update your date of birth.

Regards,

Alvaro

Im trying to buy something and I don’t know if its because live was down earlier or what but it wont let me complete the purchase and i want to buy the game

there was a service outage id try again soon

On the login prompt in the java launcher, go back. You'll see the mojang account you had been signing into - ignore it, and add a new account to the launcher. Using the email address associated with the microsoft account you just migrated to, sign in with the email address and password of your microsoft account. It's not an elegant migration on the UX side of things, but it does work.

Hello, My name is Jesse. I'm an Independent Advisor and a member of the Microsoft community and I'd love to assist you today.

Go to Minecraft.net and download the Windows 7/8 launcher. That should work.

It appears the Windows 10 launcher is bugged.