yes,… pagefile was more or like a “may be”.
Currently running out of ideas. The usually reasons you checked already. We know that account issues also cause that crash, therefore these re-login(-restart) procedure with the xbox-app. But there are also users where the anti-virus solution blocked somewhat. Last two ideas I have for the moment is to check that you have MSFS added to exclusion list of anti-vir tools and/or disabled all anti-virus/firewall/… tools for a test-case.
The second one is a bit rare, but there was cases where users changed pieces of hardware and run then into an issue because of the settings which are stored into the cloud. But I’am not sure about the error number in that case and that you can play offline points also more to the account issue.
I’am not sure whether support can check your accounting… or may be other users bring new ideas into the discussion.