No app store after login in to live account.

Hi, Jaxson. My name is Ron, I'm an independent advisor. I will be more than happy to help you.

Please login to your account at https://account.microsoft.com/services. Kindly check first if your Game pass Ultimate subscription is active there.

If it's active, open the Microsoft Store app then log out of your account from there, after that login again to the Microsoft Store app. Search the game Sea of Thieves using the Microsoft Store app and try installing it from there. Let me know if it works.

Please try the procedure below.

Log out your Microsoft store account and also the Xbox app, now type the term WSRESET in the windows search bar and run the app as administrator, a window will open, wait for the window to close automatically and restart your computer, after that login your Microsoft Store account and Xbox app again.

it will initially use your windows login credentials, if these are different then you would need to login with the correct account, if your app is not working reset it or check the windows store for app updates.

Add a new local admin account, login open app (it should open login page) logout, delete account after confirming Xbox app works on your original account. This worked for me.

Try this, please.

Solution 1: Make sure your windows are updated to the latest version, whether it's windows 10 or 11.

Solution 2: Make sure that the account in the Microsoft Store app and Xbox app are the same logged in both, in this case, the account that has the subscription.

Solution 3: Log out your Microsoft store account and also the Xbox app, now type the term WSRESET in the windows search bar and run the app as administrator, a window will open, wait for the window to close automatically and restart your computer, after that login your Microsoft Store account and Xbox app again.