How to Fix ‘Runtime Error Could not call proc’ on Windows PC?

Runtime Error Could not call proc appeared when I was installing an app. Just so you know, I was installing Euro Truck Simulator 2. My PC has Windows 10 with all the available updates, it seems. The PC itself is pretty weak, but it should be enough for the game. Can you tell me what can be done?


‘Runtime Error Could not call proc’ is an extremely difficult error that occurs when running certain applications on Windows. From XP to the latest builds of Windows 11, all users can be affected by the error.

Unfortunately there is no single reliable solution for this error: you have to go through all the available methods and hope for the best. To try to fix the Runtime error, you can do the following:

  • launch the application as an administrator;
  • run the SFC and DISM utilities:
    • press WIN+R;
    • insert CMD and press CTRL+SHIFT+ENTER;
    • run the following commands in the console:
      • sfc/scannow
      • DISM /Online /Cleanup-Image /CheckHealth
      • DISM /Online /Cleanup-Image /ScanHealth
      • DISM /Online /Cleanup-Image /RestoreHealth
    • restart your PC;
  • experiment with compatibility modes in the properties of the application’s executable file;
  • modify folder %temp%:
    • press WIN+R;
    • insert CMD and press CTRL+SHIFT+ENTER;
    • run commands in the console:
      • set TEMP=C:\Windows\temp
      • set TMP=C:\Windows\tmp
      • cd “%USERPROFILE%\Downloads”
  • perform a clean OS boot:
    • press WIN+S and find System Configuration;
    • click on the Services tab;
    • check the Do not display Microsoft services checkbox;
    • click on Disable All;
    • restart your PC;
    • check for the error.
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