Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Go to your XBox application.
First log out from the app.
Then log in again in the app.
Then try to relaunch your MSFS.
EDIT: I just launched my XBox app to take a look. I get an error message on top of the screen telling that they couldn't log me in. Maybe it's a general MS server issue.
EDIT2: I proceeded to relog in the XBox app and it worked without issues. Not sure what happened, but I could log in without problems, at least![]()

I got the 'insert disc' error yesterday - I just closed the application then booted up MSFS from the Xbox app - I usually use the MSFS2020 executable shortcut - but using the Xbox game launcher instead worked right away
On PC, for the past couple of weeks, MSFS starts in windowed mode every time. The first thing I have to do each time I start the sim is change back to full-screen mode. It's irritating, but livable. I, like you, hope they fix these issues with SU15, whenever that is.
To change from windowed to full screen press ALT + ENTER.
To change from windowed to full screen press ALT + ENTER.
It's been that way since at least FS2002. When I first installed the current sim, I hit that combo out of instinct and was pleased to find that it works.To change from windowed to full screen press ALT + ENTER.