RUNDLL32

RUNDLL & RUNDLL32

You can find these tips @ many locations, This is just another backup copy of it.

References:
http://www.robvanderwoude.com/rundll.html
http://www.mvps.org/vb/index2.html?tips/shellcpl.htm
http://www.jsiinc.com/subh/tip3500/rh3562.htm

3562 » Undocuments paths to Windows 2000 tools.

In addition to tip 3557, Jeffrey W. Horning has provided the following undocumented paths to windows 2000 tools:

Manage Shares             : rundll32 ntlanui.dll,ShareManage - Shares
Create a New Hhare        : rundll32 ntlanui.dll,ShareCreate
Add a TCP/IP Printer      : rundll32 tcpmonui.dll,LocalAddPortUI
Install New Modem         : rundll32 modemui.dll,InvokeControlPanel
Execute Device Manager    : rundll32 devmgr.dll DeviceManager_Execute
Network Id Wizard         : rundll32 netplwiz.dll,NetAccWizRunDll
Add Network Place         : rundll32 netplwiz.dll,AddNetPlaceRunDll

Shortcut to lock the Computer / Workstation in Windows 2000 - C:\WINNT\system32\rundll32.exe user32.dll,LockWorkStation

How can I open a URL from the Windows 2000 command line?

RUNDLL and RUNDLL32 are two utilities supplied with Windows 95/98 and NT.
They can call DLL functions from the command line, allowing us to create extremely powerfull batch files.
Some examples:

Start Control Panel applets ⁽²⁾:
You can run a Control Panel applet from the command-line by using rundll32 shell32.dll,Control_RunDLL or control.exe followed by the name of the .cpl. If you include the first part of the displayed name followed by a number, you may be able to start the applet with the focus on a specific tab.

Examples:
Settings tab on Display properties: start control.exe desk.cpl,Display,3
Advanced tab on Internet properties: start rundll32 shell32.dll,Control_RunDLL inetcpl.cpl,Internet,5

General syntax:

RUNDLL32 SHELL32.DLL,Control_RunDLL filename.CPL,@n,t

where	filename.CPL	is the name of one of Control Panel's *.CPL files,
	n	is the zero based number of the applet within the *.CPL file, and
	t	is the number of the tab for multi paged applets

Examples:

Date/time applet, Time Zone tab:

RUNDLL32 SHELL32.DLL,Control_RunDLL TIMEDATE.CPL,@0,1

Desktop applet, Screensaver tab:

RUNDLL32 SHELL32.DLL,Control_RunDLL DESK.CPL,@0,1

Network applet, Protocols tab:

RUNDLL32 SHELL32.DLL,Control_RunDLL NCPA.CPL,@0,2

Network applet, Adapters tab:

RUNDLL32 SHELL32.DLL,Control_RunDLL NCPA.CPL,@0,3

System applet, Environment tab:

RUNDLL32 SHELL32.DLL,Control_RunDLL SYSDM.CPL,@0,2

Additional Control Panel examples:

Control Panel    (CONTROL.EXE)
Control Panel:
    rundll32.exe shell32.dll,Control_RunDLL

Accessability Options    (ACCESS.CPL)
Accessability Properties (Keyboard):
    rundll32.exe shell32.dll,Control_RunDLL access.cpl,,1
Accessability Properties (Sound):
    rundll32.exe shell32.dll,Control_RunDLL access.cpl,,2
Accessability Properties (Display):
    rundll32.exe shell32.dll,Control_RunDLL access.cpl,,3
Accessability Properties (Mouse):
    rundll32.exe shell32.dll,Control_RunDLL access.cpl,,4
Accessability Properties (General):
    rundll32.exe shell32.dll,Control_RunDLL access.cpl,,5

Add/Remove Programs    (APPWIZ.CPL)
Add/Remove Programs Properties (Install/Uninstall):
    rundll32.exe shell32.dll,Control_RunDLL appwiz.cpl,,1
Add/Remove Programs Properties (Windows Setup):
    rundll32.exe shell32.dll,Control_RunDLL appwiz.cpl,,2
Add/Remove Programs Properties (Startup Disk):
    rundll32.exe shell32.dll,Control_RunDLL appwiz.cpl,,3

Display Options    (DESK.CPL)
Display Properties (Background):
    rundll32.exe shell32.dll,Control_RunDLL desk.cpl,,0
Display Properties (Screen Saver):
    rundll32.exe shell32.dll,Control_RunDLL desk.cpl,,1
Display Properties (Appearance):
    rundll32.exe shell32.dll,Control_RunDLL desk.cpl,,2
Display Properties (Settings):
    rundll32.exe shell32.dll,Control_RunDLL desk.cpl,,3

Display Properties (Install Screen Saver):
    rundll32.exe desk.cpl,InstallScreenSaver %1
(opens .scr at location specified by %1 in preview window)

FindFast Settings (FINDFAST.CPL)
Find Fast Properties (General):
    rundll32.exe shell32.dll,Control_RunDLL findfast.cplInternet Settings (INETCPL.CPL)

Internet Settings (INETCPL.CPL)
Internet Properties (General):
    rundll32.exe shell32.dll,Control_RunDLL inetcpl.cpl,,0
Internet Properties (Security):
    rundll32.exe shell32.dll,Control_RunDLL inetcpl.cpl,,1
Internet Properties (Content):
    rundll32.exe shell32.dll,Control_RunDLL inetcpl.cpl,,2
Internet Properties (Connection):
    rundll32.exe shell32.dll,Control_RunDLL inetcpl.cpl,,3
Internet Properties (Programs):
    rundll32.exe shell32.dll,Control_RunDLL inetcpl.cpl,,4
Internet Properties (Advanced):
    rundll32.exe shell32.dll,Control_RunDLL inetcpl.cpl,,5

Regional Settings    (INTL.CPL)
Regional Settings Properties (Regional Settings):
    rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,0
Regional Settings Properties (Number):
    rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,1
Regional Settings Properties (Currency):
    rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,2
Regional Settings Properties (Time):
    rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,3
Regional Settings Properties (Date):
    rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,4
Regional Settings Properties (Input Locales):
    rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,5

Joystick Options    (JOY.CPL)
Joystick Properties (Joystick):
    rundll32.exe shell32.dll,Control_RunDLL joy.cpl

Mouse/Keyboard/Printers/Fonts Options    (MAIN.CPL)
Mouse Properties:
    rundll32.exe shell32.dll,Control_RunDLL main.cpl @0
Keyboard Properties:
    rundll32.exe shell32.dll,Control_RunDLL main.cpl @1
Printers:
    Win9x: rundll32.exe shell32.dll,Control_RunDLL main.cpl @2
Fonts:
    Win9x: rundll32.exe shell32.dll,Control_RunDLL main.cpl @3

Mail and Fax Options    (MLCFG32.CPL)
Microsoft Exchange Profiles (General):
    rundll32.exe shell32.dll,Control_RunDLL mlcfg32.cpl

Multimedia/Sounds Options    (MMSYS.CPL)
Multimedia Properties (Audio):
    rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl,,0
Multimedia Properties (Video):
    rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl,,1
Multimedia Properties (MIDI):
    rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl,,2
Multimedia Properties (CD Music):
    rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl,,3
Multimedia Properties (Advanced):
    rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl,,4
= = = = = = = = = = = = = = = = = = = = = = = = = = =
Sounds Properties:
    rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl @1

Modem Options    (MODEM.CPL)
Modem Properties (General):
    rundll32.exe shell32.dll,Control_RunDLL modem.cpl

Network Options    (NETCPL.CPL)
Network (Configuration):
    Win9x: rundll32.exe shell32.dll,Control_RunDLL netcpl.cpl
    WinNT: rundll32.exe shell32.dll,Control_RunDLL ncpa.cpl
Dial-up Networking Wizard
    Win9x: rundll32.exe rnaui.dll,RnaWizard
Create Share Dialog
    WinNT: rundll32.exe ntlanui.dll,ShareCreate
Manage Shares Dialog
    WinNT: rundll32.exe ntlanui.dll,ShareManage

ODBC Settings (ODBCCP32.CPL)
ODBC Data Source Administrator (General):
    rundll32.exe shell32.dll,Control_RunDLL odbccp32.cpl

Password Options    (PASSWORD.CPL)
Password Properties (Change Passwords):
    Win9x: rundll32.exe shell32.dll,Control_RunDLL password.cpl

COM Ports Settings (PORTS.CPL)
COM Ports Properties (General):
    WinNT: rundll32.exe shell32.dll,Control_RunDLL ports.cpl

Server Properties (SRVMGR.CPL)
Server Properties (General):
    WinNT: rundll32.exe shell32.dll,Control_RunDLL srvmgr.cpl
Services dialog:
    WinNT: rundll32.exe shell32.dll,Control_RunDLL srvmgr.cpl Services

System/Add New Hardware Options    (SYSDM.CPL)
System Properties (General):
    rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl,,0
System Properties (Device Manager):
    Win9x: rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl,,1
System Properties (Performance):
    Win9x: rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl,,3
    WinNT: rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl,,1
System Properties (Environment):
    WinNT: rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl,,2
System Properties (Startup/Shutdown):
    WinNT: rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl,,3
System Properties (Hardware Profiles):
    Win9x: rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl,,2
    WinNT: rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl,,4
System Properties (User Profiles):
    WinNT: rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl,,5
Add New Hardware Wizard:
    Win9x: rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl @1
Add New Printer Wizard:
    rundll32.exe shell32.dll,SHHelpShortcuts_RunDLL AddPrinter

Telephony Settings (TELEPHON.CPL)
Dialing Properties (My Location / Drivers):
    WinNT: rundll32.exe shell32.dll,Control_RunDLL telephon.cpl

Themes Settings (THEMES.CPL)
Themes Properties (General):
    rundll32.exe shell32.dll,Control_RunDLL themes.cpl

Date and Time Options    (TIMEDATE.CPL)
Date/Time Properties:
    rundll32.exe shell32.dll,Control_RunDLL timedate.cpl
Choose Time Zone:
    rundll32.exe shell32.dll,Control_RunDLL timedate.cpl,,/f

TweakUI Settings (TWEAKUI.CPL)
TweakUI Dialog (General):
    rundll32.exe shell32.dll,Control_RunDLL tweakui.cpl

UPS Settings (UPS.CPL)
Uninteruptable Power Supply Properties (General):
    WinNT: rundll32.exe shell32.dll,Control_RunDLL ups.cpl

Microsoft Mail Postoffice Options    (WGPOCPL.CPL)
Microsoft Workgroup Postoffice Admin:
    rundll32.exe shell32.dll,Control_RunDLL wgpocpl.cpl

====================================================
SYSTEM WIZARDS
Open With (File Associations):
    rundll32.exe shell32.dll,OpenAs_RunDLL d:\path\filename.ext

Run Diskcopy Dialog:
rundll32 diskcopy.dll,DiskCopyRunDll

Create New Shortcut Wizard:
'puts the new shortcut in the location specified by %1
    rundll32.exe AppWiz.Cpl,NewLinkHere %1

Install New Hardware Wizard:
    rundll32.exe sysdm.cpl,InstallDevice_RunDLL

View Printers:
    rundll32.exe shell32.dll,SHHelpShortcuts_RunDLL PrintersFolder

Dial-up Networking Wizard
    rundll32.exe rnaui.dll,RnaWizard

Open a Scrap Document:
    rundll32.exe shscrap.dll,OpenScrap_RunDLL /r /x %1

Create a Briefcase:
    rundll32.exe syncui.dll,Briefcase_Create

View Fonts:
    rundll32.exe shell32.dll,SHHelpShortcuts_RunDLL FontsFolder

Run Format Floppy Dialog:
    rundll32.exe shell32.dll,SHFormatDrive
(make sure a disk is inserted in Drive A: first!)

Create a Briefcase:
    rundll32.exe syncui.dll,Briefcase_Create

Install a screensaver (copy the *.SCR file to the Windows directory first) ⁽²⁾:
```
RUNDLL32 DESK.CPL,InstallScreenSaver C:\WINNT\SYSTEM32\Default.scr
```
The directory shown is for Windows NT, adjust for Windows 95/98

Start "Add New Printer" wizard:

RUNDLL32 SHELL32.DLL,SHHelpShortcuts_RunDLL AddPrinter

Start GUI diskette format program:
```
RUNDLL32 SHELL32.DLL,SHFormatDrive
```

Logoff Windows ⁽¹⁾

Logoff Windows 98:
```
RUNDLL SHELL32.DLL,SHExitWindowsEx
```
Logoff Windows 98 and run Explorer after relogon:
```
RUNDLL SHELL32.DLL,SHExitWindowsEx 4
```
Logoff Windows NT 4:
```
RUNDLL32 USER32.DLL,ExitWindowsEx
```

Reboot ⁽¹⁾

Windows 95 (not reliable, sometimes only shutdown):
```
RUNDLL USER.EXE,ExitWindowsExec
```
Windows 98:
```
RUNDLL SHELL32.DLL,SHExitWindowsEx 2
```

Windows NT 4:

@ECHO OFF
PUSHD %temp%
ECHO [Version] > {out}.inf
ECHO signature=$chicago$ >> {out}.inf
ECHO [defaultinstall] >> {out}.inf
RUNDLL32 SETUPAPI,InstallHinfSection DefaultInstall 1 {out}.inf
DEL {out}.inf
POPD

(original batch file by Walter Zackery, adapted for readability)

Shutdown ⁽¹⁾

Windows 95:
```
RUNDLL USER.EXE,ExitWindows
```
Windows 98:
```
RUNDLL SHELL32.DLL,SHExitWindowsEx 1
```

Show Windows 9*'s "System setting changed, do you want to reboot now?" dialog ⁽¹⁾:
```
RUNDLL SHELL.DLL,RestartDialog
```
Display NT's "About" dialog, showing version, servicepack, registered owner and amount of physical memory:
```
RUNDLL32 SHELL32.DLL,ShellAboutW
```

Open a file with Windows' "Open as" dialog:

RUNDLL32 SHELL32.DLL,OpenAs_RunDLL filename

Swap your mouse to left handed use (tip from "Speedy Gonzales"):
- Windows 95:
```
RUNDLL USER.EXE,SwapMouseButton
```
- Windows NT:
```
RUNDLL32 USER32.DLL,SwapMouseButton
```
I know of no command yet to undo this, but the following will get you close:
```
CONTROL MAIN.CPL
```
or:
```
RUNDLL32 SHELL32.DLL,Control_RunDLL MAIN.CPL,@0,1
```
Start DialUp Network:
(Credits for these commands: Michael J. Gregg and Tom Lavedas)
```
START RUNDLL32 RNAUI.DLL,RnaDial exact name of dialer entry
TRACERT -h 1 -w 1
```
The RUNDLL command starts DUN, the TRACERT command is supposed to actually start the dialing process. Since I do not have access to any PC with DUN installed, I could not test the TRACERT command's effect.

Notes:		1		See my Shutdown page for more information and examples on reboot and shutdown command lines.
		2		By associating .CPL files with the command `RUNDLL32 SHELL32.DLL,Control_RunDLL %1,@0` and .SCR files with `RUNDLL32 DESK.CPL,InstallScreenSaver %1` you can open and/or install them by doubleclicking on their icons.

The following batch file installs a screensaver if one is specified, and opens the Control Panel applet at the right tab to enable adjustment of its settings (tested in NT only):

@ECHO OFF
IF "%1"=="" GOTO Interact
IF NOT EXIST %SystemRoot%.\System32\%~nx1 GOTO Interactive

RUNDLL32 DESK.CPL,InstallScreenSaver %~f1
GOTO End

:Interactive
RUNDLL32 SHELL32.DLL,Control_RunDLL DESK.CPL,@0,1

:End

OS ⁽¹⁾	Command line	Effect
DOS	`ECHO G=FFFF:0000 ¦ DEBUG`	Reboot (warm boot, sometimes cold boot)⁽²⁾
Win31*	`ECHO G=FFFF:0000 ¦ DEBUG`	Popup Task Manager, sometimes reboot
Win9*	`RUNDLL USER.EXE,ExitWindows`	Shutdown ⁽³⁾
Win9*	`RUNDLL USER.EXE,ExitWindowsExec`	Win95: various results, usualy fast shutdown (and lock PC), sometimes restart Windows, sometimes reboot. Win98: Restart Windows, sometimes reboot.
Win9*	`RUNDLL SHELL.DLL,RestartDialog`	"System Settings Change, Do you want to restart your computer now?" dialog
Win98	`RUNDLL SHELL32.DLL,SHExitWindowsEx`	Logoff ⁽⁴⁾
Win98	`RUNDLL SHELL32.DLL,SHExitWindowsEx 1`	Shutdown
Win98	`RUNDLL SHELL32.DLL,SHExitWindowsEx 2`	Reboot
Win98	`RUNDLL SHELL32.DLL,SHExitWindowsEx 4`	Logoff, and start Explorer after relogon
NT	See Reboot NT on my Solutions found in alt.msdos.batch page	Reboot immediately
NT	`RUNDLL32 USER32.DLL,ExitWindowsEx`	Logoff
NT+RK	`SHUTDOWN /L /T:10 /Y /C`	Shutdown in 10 seconds, close without saving
NT+RK	`SHUTDOWN /L /R /T:0 /Y`	Immediate shutdown & reboot
Kix	`$RC = SHUTDOWN( "\\server", "Shutting down...", 10, 1, 0 )`	Shutdown in 10 seconds, with message, close without saving, no reboot
Kix	`$RC = SHUTDOWN( "\\server", "", 0, 1, 1 )`	Immediate shutdown & reboot
Kix	`$RC = LOGOFF( 1 )`	Logoff, forcing applications to close (use 0 instead of 1 if you don't want to force applications to close)
OS/2	`START /PM SHUTDOWN && EXIT`	Shutdown ⁽⁵⁾
OS/2	`SETBOOT /IBD:C:`	Unconditional shutdown & reboot
OS/2	`SETBOOT /IBA:nonsense`	Unconditional shutdown & failing reboot ⁽⁶⁾
OS/2	`LOGOFF`	Logoff (both LAN Server client and Peer)


Notes:	1	DOS	MS-DOS and PC-DOS
		Win31*	Windows 3.1, 3.11 and 3.11 for Workgroups
		Win9*	Windows 95 and 98
		Win98	Windows 98
		NT	Windows NT 4 (and Windows 2000)
		NT+RK	Windows NT 4 with the NT Resource Kit
		Kix	Windows (any) with Kix
		OS/2	OS/2 Warp 3 and 4, LAN Server and Warp Server
	2	May not work with "exotic" memory managers, like Quarterdeck's QEMM or DesqView; in that case, use RESET.COM instead.
	3	Thanks for Bill James and Tom Lavedas, for the information on RUNDLL. Find more RUNDLL examples I collected on my RUNDLL page.
	4	Tested parameters for `RUNDLL SHELL32.DLL,SHExitWindowsEx`
		Parameter	Result
		none	Logoff
		0	Logoff
		1	Shutdown
		2	Reboot
		3	Reboot
		4	Logoff, and start Explorer after relogon
		5	Shutdown
		6	Reboot
		7	Reboot
		8	Logoff
		This pattern then seems to repeat itself: 8 equals 0, 9 equals 1, etcetera. Letters are invalid, and are ignored (equal to none).
	5	Will still stop and ask for confirmation if a non-PM application is active
	6	Needs Boot Manager installed. Will reboot, no questions asked, and then stop if nonsense is an invalid Boot Manager menu entry (which, in this case, is exactly what we want).