my sons x box one s is not loading

My sons is an x box one s and mine Is just the x box one. We can't sign in to either of our accounts on both consoles!

1. All your games are tied to your account, not a specific X Box. If the games are "yours", no worries.

2. I bounce two externals from a launch day X Box 1, to a X Box 1 S, and to a X Box 1 X, all the time. No problems.

3. With non-enhanced games you'll notice faster load times. Enhanced games load faster, look better, and are much smoother; especially over my original.

my sons x box is saying he doesn't have permission to have x box live why ???/

I am getting that same error message . my profile loads .X-box live loads but my profile will not connect to x-box live.

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.