I fixed the ntdll.dll issue by taking ownership of the install directory for Outer Worlds.
I downloaded Outer Worlds via Microsoft Store last week. I could play up until the end of character creation. After the final cutscene before you start playing the game, it would crash very consistently. I thought it was driver issues until I checked the event viewer and saw the ntdll.dll issue.
Microsoft Store installed the game with the account SYSTEM as the owner. I'm assuming the game is using your current user to try to access something in this folder and is getting denied permission. I fixed my issue by setting ownership for \WindowsApps\ under the USERS account group. I had to manually set ownership of the \PrivateDivision.TheOuterWorldsWindows~ folder as well. Hopefully this helps others with the same ntdll.dll issue.
