Rundll32.exe is used to run Dynamic Link Library (DLLs) on the Windows operating system. DLLs store code to provide functions to Windows processes and third-party applications, and can be accessed by multiple programs simultaneously. Run a 32 bit DLL function.Rundll32 is available on all version of Windows from Windows 95 onwards, but only runs in 32 bit mode.Continue reading “Rundll32”