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  arrow Requires
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Move applications, files and settings from one PC to another. Handles Windows upgrades too, even XP 32-bit to Windows 7 64-bit!
 
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Ensures you have the latest drivers and software updates to make your PC run better and safer.
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Fix-It Utilities
Make your PC run like new! Includes Anti-Virus, Anti-Spyware, hardware diagnostics, registry fixer, and more!
     
 
 
File Analysis Report
 

Rundll32.exe

Windows Host Process

 
     
  Description  
     
 
icon  

Rundll32.exe is a program to run and open other DLL processes.  For example,to open the Windows About box, type: rundll32 Shell32, ShellAboutA on the command line. Some of the more common actions that rundll32 can be used for are shown in the table below.

Command Line Options Action
User32.dll, LockWorkStation Locks the computer
Shell32, OpenAs_RunDLL "Open With" menu
Shell32, ShellAboutA About box
Shell32, Control_RunDLL Control Panel
Shell32, Control_RunDLL desk.cpl Setting "Display"
shell32.dll, Access.cpl Accessibility Control_RunDLL,, 1  Accessibility (keyboard)
shell32.dll, Access.cpl Accessibility Control_RunDLL,, 2  Accessibility (Sound)
shell32.dll, Access.cpl Accessibility Control_RunDLL,, 3  Accessibility (advertisement)
shell32.dll, Access.cpl Accessibility Control_RunDLL,, 4  Accessibility (Mouse)
shell32.dll, Access.cpl Accessibility Control_RunDLL,, 5  Accessibility (General)
shell32.dll, Control_RunDLL appwiz.cpl,, 1 Add New Programs
shell32.dll, Control_RunDLL appwiz.cpl,, 2 Windows components wizard
shell32.dll, Control_RunDLL appwiz.cpl,, 0 Add/Remove programs
shell32.dll, Control_RunDLL desk.cpl,, 0 Display Properties (Background)
shell32.dll, Control_RunDLL desk.cpl,, 1 Display Properties (Screen saver)
shell32.dll, Control_RunDLL desk.cpl,, 2 Display Properties (Display)
shell32.dll, Control_RunDLL intl.cpl,, 0 Regional Settings (General)
shell32.dll, Control_RunDLL intl.cpl,, 1 Country setting (numbers)
shell32.dll, Control_RunDLL intl.cpl,, 2 Country setting (currency)
shell32.dll, Control_RunDLL intl.cpl,, 3 Country setting (time)
shell32.dll, Control_RunDLL intl.cpl,, 4 Country setting (date)
shell32.dll, Control_RunDLL intl.cpl,, 5 Country setting (input)
shell32.dll, Control_RunDLL joy.cpl,, 0 Game Controller (General)
shell32.dll, Control_RunDLL joy.cpl,, 1 Game Controller (Advanced)
shell32.dll, Control_RunDLL main.cpl, @ 0 Mouse properties (buttons)
shell32.dll, Control_RunDLL main.cpl, @ 1 Keyboard properties (speed)
shell32.dll, Control_RunDLL mmsys.cpl,, 0 Sounds and Multimedia properties (Sounds)
shell32.dll, Control_RunDLL mmsys.cpl, 1 Sounds and Multimedia properties (audio)
shell32.dll, Control_RunDLL mmsys.cpl,, 2 Sounds and Multimedia properties (hardware)
shell32.dll, Control_RunDLL modem.cpl Phone and Modem Options
shell32.dll, Control_RunDLL Netcpl.cpl Network Settings
shell32.dll, Control_RunDLL password.cpl Password Settings
shell32.dll, Control_RunDLL sysdm.cpl,, 0 System Properties (General)
shell32.dll, Control_RunDLL sysdm.cpl,, 1 System Properties (Network Identification)
shell32.dll, Control_RunDLL sysdm.cpl,, 2 System Properties (Hardware)
shell32.dll, Control_RunDLL sysdm.cpl,, 3 System characteristics (User profiles)
shell32.dll, Control_RunDLL sysdm.cpl,, 4 System Properties (Advanced)
shell32.dll, Control_RunDLL timedate.cpl,, 0 Date and Time properties
diskcopy.dll, DiskCopyRunDll Disk Copy
shell32.dll, SHHelpShortcuts_RunDLL AddPrinter Add Printer
shell32.dll, SHHelpShortcuts_RunDLL Folder Printer Printer View
shell32.dll, SHHelpShortcuts_RunDLL Fonts Folder Show Fonts


Rundll32.exe is a 32/64-bit executable for a graphics UI style application.
 
     
   
  Common Facts From Tracked Core OS Files  
     
 
key facts  
File description
  Windows host process (Rundll32)
 
File Version
  5.1.2600.0  to  6.3.9600.16384
 
Application
  Microsoft Windows Operating System
 
App version
  5.1.2600.0  to  6.3.9600.16384
 
Type
  32, 64 bits
 
Vendor
  Microsoft Corporation
 
Copyright
  (c) Microsoft Corporation. All rights reserved.
 
   
  Variants and Default Locations  
     
 
varients  
  C:\Windows\System32

This directory holds the core operating system files and libraries.

 
side
Windows Version; Bits
File Size
Modified Date
Captured from
More
right
 
xp
  XP R, SP1; 32
Core without updates
details  
 
xp
  XP SP2; 32
Core without updates
details  
 
xp
  XP SP3; 32
Core without updates
details  
 
xp
  Vista R, SP1, 2; 32
Core without updates
details  
 
xp
  Vista SP2; 64
Core without updates
details  
 
xp
  7 RTM; 32
Core without updates
details  
 
xp
  7 RTM; 64
Core without updates
details  
 
xp
  8 RTM; 64
Core without updates
details  
 
xp
  8.1 RTM; 64
Core without updates
details  

 
  C:\Windows\SysWOW64

This directory holds the 32-bit system files on the 64-bit editions of Windows. WOW stands for Windows On Windows. When a 32-bit program runs, Windows will simulate this directory as being c:\windows\system32 for backwards compatibility.

 
side
Windows Version; Bits
File Size
Modified Date
Captured from
More
right
 
xp
  Vista SP2; 64
Core without updates
details  
 
xp
  7 RTM; 64
Core without updates
details  
 
xp
  8 RTM; 64
Core without updates
details  
 
xp
  8.1 RTM; 64
Core without updates
details  

 
  C:\Windows\WinSxS\...

The WinSxS directory holds Windows Side-by-Side DLLs. WinSxS allows multiple versions of the same DLL (code libraries) to exist on the same system. This ensures that every application will get the DLL version they were tested and designed for. The result is improved application and system stability. See details for full directory location.

 
side
Windows Version; Bits
File Size
Modified Date
Captured from
More
right
 
xp
  Vista SP2; 64
Core without updates
details  
 
xp
  7 RTM; 64
Core without updates
details  
 
xp
  8 RTM; 64
Core without updates
details  
 
xp
  8.1 RTM; 64
Core without updates
details  
 
xp
  Vista R, SP1, 2; All
Core without updates
details  
 
xp
  7 RTM; All
Core without updates
details  
 
xp
  8 RTM; 64
Core without updates
details  
 
xp
  8.1 RTM; 64
Core without updates
details  


Hover over a highlighted field for more details.
 
   
  Security  
     
 
security  

There are no known security risks in using Rundll32.exe assuming it has not been modified or replaced by virus or malware and it resides in the default directory. This file is installed as part of the Windows operating system.

Startup Security

bad
29
  Undesirable such as viruses, malware or adware
unknown
1
  Unknown

View our Rundll32.exe Startup Applications list for alternative functions and locations not shown below.

 
     
  Requires  
     
 
required   The following files are required when running this program. These may call other files, and there can be additional required files not in this list. Required files for non-Core OS programs above are not included.

           
  import Api-ms-win-core-path-l1-1-0.dll*   import Msvcrt.dll
  import Api-ms-win-core-winrt-error-l1-1-1.dll*   import Ntdll.dll*
  import Gdi32.dll*   import Shlwapi.dll*
  import Imagehlp.dll   import User32.dll
  import Kernel32.dll  
 
* indicates a file that is not required in all versions. Click on filename for details.
 
   
  Additional Analysis  
     
 
notes  
  • The newest version of Rundll32.exe requires a C++ library, and was likely written in Micorsoft Visual C++. It was likely built using Visual Studio 2012.
  • Rundll32.exe is a PE style file.
  • This program does not appear to be internally referenced by any other file.
 
   
  Vendor Summary  
     
 
Vendor
  Microsoft Corporation

Microsoft Corporation Logo
Phone
1-425-882-8080
1-800-642-7676

Web
Global
USA

Assistance
Support

 
   
  Research this File  
     
 
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  Notes  
     
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