The Old New Thing

What’s the guidance on when to use rundll32? Easy: Don’t use it

January 4, 2013 Jan 4, 2013 01/4/13

Raymond Chen

Occasionally, a customer will ask, "What is Rundll32.exe and when should I use it instead of just writing a standalone exe?" The guidance is very simple: Don't use rundll32. Just write your standalone exe. Rundll32 is a leftover from Windows 95, and it has been deprecated since at least Windows Vista because it violates a lot of ...