How can I completely stop a profile from accessing the microsoft store on an xbox series x?

make sure he is part of your microsoft family and then limit his spending to 0 then he can only get free games and cannot purchase anything without your permission.

Add someone to your family group in the Xbox Family Settings app | Xbox Support

Hi, I hope you're doing great out there. I am an Independent advisor and I am here to help you in regard to your concern.

I apologize but that's not possible no worries because we can set up a passkey for every purchase.

"1. Press the Xbox button on the controller to open the guide, then select System > Settings > Account > Sign-in, security & passkey. To help protect your account, you may be asked to enter your password.

2. Select Change my sign-in & security preferences.

3. Scroll right and select Customize.

4. Scroll right and select Ask for my passkey to make purchases.

5. Select Passkey required."

For your reference, you can check this link: https://support.xbox.com/en-US/help/family-onli...

This way you need to enter your passkey before they can complete a purchase.

Can get a extended warranty on the Xbox series x

Hi

Microsoft offers an extended warrranty if you buy it from them, other restailers have thier own.

From Microsoft: https://www.microsoft.com/en-us/store/b/microsoft-complete

regards.

Yes, you can still download digital games from the Microsoft Store using the Xbox Series X.

Due to the complexities of the Series S and X and how they work, Series X/S games can only be played from either the internal drive or the official expansion card. Game drives can only play older games, from XBox One and back. You can store Series X/S games on the drive, just cannot run them from it