So I have 1 Xbox, an Xbox series x and it has 2 accounts but my account, account A...

Yes and no

Yes there is a difference

To make it simplier

Series x is console 1

Xbox one s is console 2

Your account assuming it has the xgu is account 1

Your sons account is account 2

Account 2 must be on console 2

Account 1 makes console 2 it's home console under my account settings

Account 1 can then play on console 1-2 but only on console 1 if you sign in online at all times

Advance features like cloud play is only available on account 1

Sorry i phrased it weird. Or im understanding it weird. So account a, b and c are accounts that have been signed in on My xbox. So xbox 1 is mine. Main account on xbox 1 is Account A.

account c is on its own xbox. So xbox 2. On xbox 2, account a and account C are accounts that have been signed in on. So these accounts A and C are gamesharing. Main account on xbox 2 is Accounr C

Account B on xbox 1 has not set xbox 1 as its home xbox. So if im following it right, if account B purchases a game on xbox 1, account C from xbox 2 wont receive access?

I have not, but as I mentioned Personalisation was working on the Xbox One with no issues. It is on the Series X where this issue has occurred so I don't think it is to do with my account.

I have even done a console reset which removes my account, but still the same. Something is happening between Xbox Live and my Series X or it is the console itself and not Xbox Live.

I have only 1 account on it. I bought everything I have. The games are not transferring to my series X from my Xbox 1

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.