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Questions tagged [rundll32]

runDLL32.exe is a Win32 - utility from Microsoft Windows that loads and runs 32-bit specific functions from dynamic-link libraries (DLLs).

Useful links: Rundll32 on technet. Rundll32 on SS64 help pages.

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How to use Rundll32 to execute DLL Function?

Using the ShellExecute documentation as a reference: I run the following from the command line: C:\>RUNDLL32.EXE SHELL32.DLL,ShellExecute handle,"open","C:\Documents and Settings\admin\Desktop\tmp",NULL,NULL,SW_SHOWNORMAL This results in an…
mike
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rundll32.exe equivalent for 64-bit DLLs

Is there an equivalent of rundll32.exe for calling 64-bit DLLs?
edotan
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Need to run a c# dll from the command line

I have a c# dll defined like this: namespace SMSNotificationDll { public class smsSender { public void SendMessage(String number, String message) { ProcessStartInfo info = new ProcessStartInfo(); …
Nico
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Rundll32.exe javascript

I've just (August 2014) seen a report of a program that uses the command line rundll32.exe javascript:"\..\mshtml,RunHTMLApplication" How does that work? I thought the first parameter was supposed to be the name of a DLL (mshtml), but how does…
david
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How does RunDll32 work?

How exactly does RunDll32 call a function, without knowing the number/types of arguments that the function can take? Does it have a built-in compiler or something of the sort?
Downvoter
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How do I use Rundll32 to swapmousebutton?

I'm repeating a question from another forum, as I'd like the same answer. From MSDN's SwapMouseButton Function. How do I pass boolean data from command prompt through rundll32.exe to a boolean type argument in a command running from user32.dll? I'm…
TJR
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Use Rundll32.exe to execute function exported by DLL

I have a DLL which exports a function: __declspec(dllexport) void __stdcall MyEntryPoint(char* params) { MessageBoxA("MyEntryPoint",params,0,0); } How can I use rundll32.exe to load my DLL and call MyEntryPoint()?
CnativeFreak
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How to capture result from a rundll32 invocation?

I've been bitten by this old bug/missing feature in Java: http://bugs.sun.com/view_bug.do;jsessionid=b2ac8ea11f05c16d948e24d36fb5?bug_id=4673406 The thing is that the "Properties" button in Java's standard print dialog is seemingly always disabled…
perp
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Launch associated program or show "Open with" dialog from another program

Under Window Seven, the following command displays a dialog box then terminates without any other action, why? The expected effect is launching the associated program Notepad++ or at least Notepad RUNDLL32.EXE SHELL32.DLL,OpenAs_RunDLL…
Aubin
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How Do I Get The Names Of All The Entry Points In user32.dll?

I am experimenting around with rundll32.exe and user32.dll. For example, to lock my workstation I type: rundll32.exe user32.dll, LockWorkStation I would like to try other commands (entry points) in user32.dll but I don't know what they are. Is…
Jan Tacci
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Why does RunDLL32 process exit early on Windows 7?

On Windows XP and Vista, I can run this code: STARTUPINFO si; PROCESS_INFORMATION pi; BOOL bResult = FALSE; ZeroMemory(&pi, sizeof(pi)); ZeroMemory(&si, sizeof(si)); si.cb = sizeof(STARTUPINFO); si.dwFlags = STARTF_USESHOWWINDOW; si.wShowWindow =…
Vicky
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"RUNDLL32 PRINTUI.DLL,PrintUIEntry /Sr /n... Operation could not be completed (error 0x0000000c)

I stored my printer settings in a .dat file with this command: RUNDLL32 PRINTUI.DLL,PrintUIEntry /Ss /n "SATO CG408" /a "c:\INI\small-tag.dat I'm then trying to restore the printer setting in VB.net with this command (passing in my ini…
user2531854
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rundll32 url.dll,FileProtocolHandler

I'm using rundll32 url.dll,FileProtocolHandler my_file.dotx to open files under Windows. It works fine with .docx documents, but when I try it with .dotx documents (template documents), it creates a new .docx based on the template. Just as the…
Nanocom
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Open Word document from command line with additional data source parameter

It is possible to open a word document from the command line using this: rundll32 url.dll,FileProtocolHandler path.to.word.document.doc Unfortunately, that document needs an external data source, so the path of that data source has to be set…
erdal.karaca
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Using rundll32.exe to launch a click once deployment URL?

I am using the following command from the command prompt in windows: C:\Users\myusername>rundll32.exe dfshim.dll,LaunchApplication "http://ClickOnceDeplymentURL.application" NULL 0 but nothing happens? No errors or nothing. I expect it to launch…
user1202434
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