Delete Generated Files

Problems? P3D takes tooooo long to start?

Use a Delete Generated Files shortcut in the root of P3D4 installation folder.
Before you go ! Empty your Recycle bin in Windows.

What does it do?
It activates %COMSPEC% /C “Prepar3D.exe -deletegenerated” and will reset P3D4 to default.

Which files and folders are removed to the Recycle bin?

Where they come from (1)? 
C:\ProgramData\Lockheed Martin\Prepar3D v4
Files and Folders: [add-ons.cfg ./. weather.cfg]

Where they come from (2)?
C:\Users\yourname\AppData\Local\Lockheed Martin\Prepar3D v4
Files and Folders: [/Controls/ ./. /Shaders/]

Where they come from (3)?
C:\Users\yourname\AppData\Roaming\Lockheed Martin\Prepar3D v4
Files and Folders: [add-ons.cfg ./. WindowDefinitions.xml]\

What do you need to restore from the Recycle bin?

  • dll.xml (for starting FSUIPC, LINDA etc.
  • exe.xml (for starting apps by an .exe)
  • simobjects.cfg (for linking tailored aircrafts folders)
  • \Controls\ (from ../Local Roaming and ../Roaming –  your hardware settings)
  • If you like: VehicleFavorites.xml
  • Uncheck Pause on task switch
  • Ignore crashes
  • You should be able to start up in ~2 minutes

Startup Time Prepar3D v4 from FlightSim Eindhoven on Vimeo.