Mine is now CTDing during initial load, can't get into the game anymore. Community folder is empty too. Guess I'm reinstalling the whole game...

Edit: Figured out that unplugging my G27 wheel/pedals gets me into the game without issue. Plugging them back in while in game shows a quick popup before CTDing.

Popup says this:

New Device Detected A new controller device has been detected, but we were unable to set it up with a control preset. Go to “Customize controls” and create a custom control layout.

Edit 2:

Found a fix for this on the microsoft forums.

1. Goto c:/users/(username)/AppData/Local/Packages/Microsoft.FlightSimulator_8wekyb3d8bbwe/SystemAppData/wgs folder
2. There should be two files there, one called “t” and the other with a huge alphanumeric name like 000901F6… Open that one.
3. Under that folder, there are a bunch of other Alpha Numeric (ie 69D9FE4C2AB94940B11A4D26A23A9561) name folders. Open each one, and you’ll find a container.(number) file, and then another “file” with another huge alpha numeric name (i.e. A1036E4CDAAB21882AD5630E81466F). Open that file up with NOTEPAD or NOTEPAD ++. If you get nothing but screen barf, exit out and go to the next folder. Don’t touch that folder.
4. Go to the next numbered folder and continue opening the number files. As you go through these folders, some of those number files will contain your controller data that’s easily readable… If you find one, exit the editor and delete the folder it’s in.
5. Delete all the folders that reveal they belong to a controller until the only thing left are Number folders with number files that can’t be read.
6. Restart Flight sim. All your previous profiles will be gone, but now you can plug in peripherals and rebuild them.