error code 0xa3ea0066 on xbox gamepass app whenever i try to download any ea play game,...

I'm Samy an independent advisor. Welcome to the Xbox community. How are you?

These steps can help you, give it a try.
Check for updates on Windows Update, update everything including optional/additional updates.
1. Logout from Xbox app and Microsoft Store app
2. Look for the Xbox app and Microsoft Store app in the Windows menu, right-click, click app settings and then click terminate, restore and reset.
3. Clear the store cache type ''wsreset'' in the Windows bar, run as admin, and wait for the screen to close and open the store automatically.
4. Open the Microsoft Store app, click on the 3 dots in the upper right corner>downloads updates>get updates and update everything.
5. Restart your PC, log in to both apps and see if that solves the problem.

In the EA desktop app, log out of your account, use the EA recovery app and when you log into the app again use the option to log in with your Xbox account.

Some basic advice to give is either getting ultimate to get everything out of the way as I'm pretty sure normal game pass doesn't give you Ea play or just buy Ea play.

i have fixed this issue but another has come, when i download battlefield 2042 or any ea play game on the xbox app, it pulls up the ea play desktop app and tells me to join ea play which i thought came with xbox game pass (not ultimate), while battlefield is stuck in the preparing 0% phase and then it suddenly disappears without showing an error code. i am absolutely sure that i have connected the xbox account to the correct ea account on ea.myaccount , i have contacted a live chat guy from ea and he tells me to contact you guys. please help me this is confusing

Here is a Solution that i found helpful may it help you as will.

error code 0xa3ea0066

You oddly have to have the EA app open to fix it. The gamepass app then sends you over to the EA app. The games will then show up in gamepass as downloading.

This is an EA error for a login error