SimFX window not loading on Xbox, module wasn't able to initialize.

1. On your Xbox Series X|S console, launch My games & apps.
2. Navigate to Games, and place the cursor over Microsoft Flight Simulator.
3. Press the menu button (three lines) on the controller, and select Manage game and add-ons from the context menu.
4. Within the context menu, press the menu button on the Microsoft Flight Simulator tile and select “Manage installation …”
5. Navigate to the Downloadable add-ons area and press X on “Microsoft Flight Simulator Add-on Support”
6. Uninstall / Delete "Add-on Support".
7. Then restart the Console and launch the sim, it should reinstall that component.