CTD with no errors

Do you have the same issue if you follow the OP’s steps to reproduce it?

Not tried

Provide extra information to complete the original description of the issue:
FS loads to home screen OK. I can select tabs such as Options. But if I select eg Activities / Bush Trips / Rijeka to Santorini a CTD occurs. It seems that CTDs occur when selecting anything that involves flying. This has only just occured after 90 hours without problems and has coincided with a Windows 11 update today.>
EDIT Also crashes when running in Safe Mode
EDIT Rolled back Windows 11 Security Update KB5023706 but still crashing.
EDIT Turned off anti-virus but still crashing
EDIT PROBLEM RESOLVED by deleting Steam Cloud Save:

  1. From your Steam Library, right-click on the Microsoft Flight Simulator icon
  2. Click on Properties
  3. Uncheck the “Keep Game saves in the cloud for Microsoft Flight Simulator” box
  4. Open (by default)

5.C:\Program Files (x86)\Steam\userdata*

  1. Find the folder corresponding to your profile and delete the folder: Steam\userdata\usernumber)*1250410*
  2. Restart Microsoft Flight Simulator
  3. Follow the onboarding and launch a flight
  4. If everything works, quit Microsoft Flight Simulator then you can re-enable Steam Cloud Sync.

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If on PC, Fault Bucket ID - Instructions here - Please type in just the Fault Bucket ID # rather than a screenshot for privacy reasons:

Fault bucket 1599121587109661545, type 4