RegError: C0 CFP:218100450 & CFP:218100455

After installing Simul8, some users might see one of the following message when opening the software:

For installation help see Startup or Shutdown of application failed, registry settings may be wrong or files missing or Windows may be very low on resources. Contact support with the following information:

Reason code = RegError: C0 [CFP:218100450] Exception: Out of system resources Build: XXXX


Reason code = B3 [CFP:218100455] Exception: Out of system resources Build: XXXX

These messages indicate that you need to enable some compatibility settings prior to opening the program. To fix your settings:

  • Locate your Simul8 installation directory (by default this is C:\Program Files (x86)\Simul8), and find and right-click on the S8.exe file
  • After right-clicking, select “Properties”
  • Select the Compatibility Tab
  • Check the option for “Disable display scaling on high DPI settings”

Alternatively on some machine your options will be:

  • Click “Change high DPI settings”
  • Check option for “Override high DPI scaling behavior. Scaling performed by:”
  • Choose “System” from drop-down menu

Now launch Simul8.

If the message still appears, in the same Compatibility Tab for Simul8, you can also try running it in Compatibility Mode for an older version of Windows (such as Windows 7 or XP). Ensure your screen resolution is set to 1920 × 1080, restart your machine, and run Simul8.

If the issue still persists after doing the above steps, then please email