To Create Dummy D3d9: Lumion Failed

Troubleshooting Guide: "Lumion Failed to Create Dummy D3D9"

Step 1: The Basic Restart & Update (3 minutes)

7. Check Windows Graphics Settings

  • Exact error message and screenshots.
  • Lumion version/build.
  • Windows version and build number.
  • GPU make/model and driver version.
  • Contents of dxdiag output (saved text).
  • Lumion log files from installation folder (attach).
  • Steps already tried (drivers updated, overlays disabled, DDU run, etc.).
  • Whether issue occurs on other machines.
  • C:\Program Files\Lumion
  • C:\ProgramData\Lumion (hidden folder)
  • %LocalAppData%\Lumion

This error typically appears when launching Lumion and prevents the software from starting correctly. Below, we explain what causes this issue and provide step-by-step solutions to resolve it.

To fix the problem, you must first understand it. lumion failed to create dummy d3d9

Step 3: Check Event Viewer