This seemed to happen out of the blue but I when I start P3Dv5 it has its opening screen for about 10 seconds then disappears.  So I did a fresh re-install of P3Dv5 HF2 (full version, not an update).  Same thing. I have no add-ons installed.  Have disabled virus protection and firewall during install and when starting program.  Have uninstalled and re-installed twice now... same issue.  I know my d/l from Lockheed works as I have been using it before.  Have gone through the list LM provides... still no go.

Baffled... starting to search internet on ideas but maybe someone out there has had this experience and got it working.  Ideas appreciated.

Clutch

 

Did you also backup and delete all your configuration file folders and binary shader files? Usually a corrupt Prepar3d.cfg file will cause the sim not to start.

jabloom you're the man! 😊 

I believe it was the shader folder.  But here is the funny thing... there was no Shaders folder installed, and no Effects folder and no Controls folder yet after fresh installations P3D said the install was a success?!?!?  Twice?  Oh well, at least it's working.