If you regularly find Microsoft Flight Simulator 2020 crashing, these are the possible solutions that you can try to fix it:

1. Keep everything up-to-date.

   The simplest way to fix Microsoft Flight Simulator 2020 bugs is to ensure that the game is fully updated. Make sure that you let the system update the game before loading it again after a crash. 
   The game will normally run a quick update check before loading the main menu so all you have to do is to allow it to do so. 
   It’s also not a bad idea to make sure that you update the rest of your software (other apps and Windows OS) at this time.

2. Ensure your PC meets system requirements.

   Microsoft Flight Simulator 2020 is demanding game and requires a good graphics capable machine to run flawlessly. Make sure that your PC is equipped to handle it by checking the minimum and recommended system requirements.
   I personally find that the mid-ranged price RTX 2060 GPU runs the game in highest settings without any issues.

3. Check for GPU drivers.

   It is very important that your graphics card has the most recent drivers when playing Microsoft Flight Simulator 2020. NVIDIA has released a special update for new games such as Microsoft Flight Simulator 2020, A Total War Saga: TROY, and Tony Hawk’s Pro Skater 1+2. 
   How To Check For AMD GPU Driver Updates

4. Reboot your PC.

   Sometimes, a simple restart is enough to fix random bugs. Make sure that you shut the PC down for at least 30 seconds before playing the game again.

5. Troubleshoot the Xbox one app.

   Some players have reached out to us to share that they were able to fix crashing issues on Microsoft Flight Simulator 2020 by fixing the Xbox app. 
   These are the 4 things that you can do to troubleshoot the Xbox app:
   -Terminate
   -Repair
   -Reset
   -Uninstall.
   To access these troubleshooting options:
   -Press the Windows button at the lower left corner,
   -Search for the Xbox app,
   –Right click on the Xbox app, and
   -Select App settings.
   The first thing that you want to do is to use the Terminate option. This will force close the Xbox app including all its related processes like a virtual memory for Xbox game. Because Microsoft Flight Simulator needs the Xbox app to be running in the background, this will also force the game to quit.
   If the Terminate option won’t help, the next thing that you can do is to try Repair. This is usually effective in fixing temporary or random bugs.
   In case there’s a problem with the Xbox app files, you can also try the Reset option. You must do this if the first two options mentioned above did not help.
   You should consider doing the Uninstall option if there’s still an issue with your game. As the name suggests, this one will delete the Xbox app from the system. You’ll need to install it again afterwards.

6. Verify Integrity of game files (if you’re on Steam).

   If you bought Microsoft Flight Simulator 2020 from Steam, you should consider checking for possible damaged game files. You can do this by checking the integrity of the game files or manage paging file size for all drives.
   Check out this article on how to do that:
   How To Verify Integrity of Game Files To Fix Steam Issue

7. Reinstall Microsoft Flight Simulator 2020.

   If none of the solutions mentioned in this guide has helped so far, you have no other choice but to try and delete and reinstall the game. This is usually effective in fixing deeper game file issues.