If you are still in the installation phase, add an exclusion for the Lumion Download Manager executable as well. 3. Fixing the onnxruntime.dll Conflict (Lumion 10 users)
Navigate to > Manage settings .
via the Task Manager (Ctrl + Shift + Esc) if it is stuck. Open Windows Security > Virus & threat protection . If you are still in the installation phase,
Best Practices for Maintaining High-Quality Lumion Performance
: Select Repair within the installation wizard interface. via the Task Manager (Ctrl + Shift + Esc) if it is stuck
Go to > Protection history to see if any Lumion files were recently quarantined. Restore them if found. Navigate to Exclusions or Allowed Apps .
If the error persists:
Navigate to:
If you have tried all six steps above and the error still appears—specifically with the phrase —your Windows registry may contain deep-seated permission conflicts or orphaned file links. Go to > Protection history to see if