my xbox app aint working stuck on update failed screen

Just FYI I have the same problem as well and your fix worked. I suppose my 4GB 360 picked up an update overnight that went bad and would no boot to the dashboard just remained stuck on the update failed screen, first I tried updating using the usb stick
I was using for additional storage on my console and of course that didn't work then I burned and copy to the disk and worked like a charm.

I have the black screen fixed, but can't install games and apps, then cleared the mac thing like y'all said, seemed to work but certain things weren't working, so I went to do a reboot but keep my games and apps, now it's just stuck on the system update
screen for half an hour with the green circle going round and round

I resolved by uninstalling and deleting all references to Xbox in my system. Cleaning, updating, then reinstalling the Xbox PC App.

Then everything installed.

It wasn't a game that was failing it was the MS App loading into a black screen and hanging.

Same here. Xbox work fine until the update

Now stuck on the check for update screen when reinstall

Same issue on Xbox series X today.

Tried : rebooting, uninstall app,…

Nothing works. App stuck on loading screen then error 0x8027025a