Xbox Home on Series X/S

Hello Rhmd, to do this, you need to set the Series S as the home Xbox, then make sure both your account with the games on the Series X, and his account are both signed in on the Series S. Once you do that he will have access to all of the games on the
Series X from his Series S.

Oh heck yes. Even if it's a simple "No, you can not set your home xbox on a Series X/S if you are using a profile from a Xbox 1, Xbox 1 S, etc...". Otherwise, from a technical perspective, this should be investigated by the developers/operations team to determine if it is a bug or not.

To me, it seems like this SHOULD work if a Series X/S user can set their home xbox to a Xbox 1.

i set the series X as the home xbox and it did not let me play MW3 even though i own it.

Edit : When i swapped the series X as my home console it took away MW3 on the series S too. So now i cant play on both consoles.

I have this exact issue. His is my setup:

My son has a One S

I have a Series X

I was able to set the One S as my home xbox

I added his account to the Series X. Went to setting and then to my home xbox. At first, it is checked, then I get the circle, and the check mark is removed. Click on make this my home xbox on the Series X using his account, the circle spins, and then back to the "unchecked" box.

Checking his (One S), my account still has that xbox as my home xbox.

Reset networking, reset MAC address, flushed ARP cache on my switch and router, restarted all of those devices, and reset the Series X (both hard power cycle and factory reset). No luck.

Is it due to his account technically being a Xbox One profile and mine a Series X?

Also, my son's account is a child account but, unrestricted.

No such thing as an Xbox One Series X. The Xbox One family of consoles has an S and an X but are still just Xbox Ones. You need the Series family of consoles. The Xbox Series S or Xbox Series X. These are different from Xbox One S or Xbox One X.

The "One" and "Series" are the console types.