rundll32.exe equivalent for 64-bit DLLs

win64 rundll32
edotan picture edotan · Jan 16, 2011 · Viewed 20.2k times · Source

Is there an equivalent of rundll32.exe for calling 64-bit DLLs?

Answer

PleaseStand picture PleaseStand · Jan 16, 2011

On 64-bit versions of Windows, two rundll32.exe programs exist:

  • 64-bit: C:\Windows\System32\rundll32.exe
  • 32-bit: C:\Windows\SysWOW64\rundll32.exe

If you are trying to do this from a 32-bit program, you might need to use C:\Windows\Sysnative or temporarily turn off WoW64 file system redirection. See the Microsoft documentation.

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