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Thankfully I found a solution. I went to my programs and chose to "repair" the Xbox app. I also downloaded the iPhone Game Pass app. I restarted my computer and installed a game using the app on my phone. Now I can download games from the app on my PC with no issues. Hopefully this is a permanent fix.

It seems that you've been able to fix your issue, but you've edited your original message to show that. It's great to see that it is working!

If you have any other issues related to the Xbox app, try to get in touch with the Xbox Support, or start a new thread here on the Microsoft Community.

Hello DeeMiller1! I'm Claus, an Independent Microsoft Community Consultant for Xbox! Glad to be able to help you!

To fix this issue, go to the Xbox app and then on the top bar, select your Profile picture. There, select Sign out. Right after, sign in to your Xbox Live profile (Microsoft account) again, and the issue should be fixed.

Hi there! Let’s do our best here to sort this out.

To confirm, are you trying to download it from a Windows 10 or Windows 11 machine?

Let’s check if you’re using an adult account or a child account by checking your account privacy settings via https://account.xbox.com/Settings. If you could access your privacy settings, that would mean that you’re using an adult account. But if you were redirected to a different page, you’re using a child account where you need to be added to a family group because only an organizer or adult account can change a child’s privacy settings.

I went into my settings and "changed" my birthday i.e just filled out the info again, saved it, logged out and back in and it worked.

answer found I guess