RunDLL32.exe

Run a 32 bit DLL function. This command is available on all version of Windows from Win95 onwards, but only runs in 32 bit mode.
Many options are case sensitive.

Syntax
       RUNDLL32.EXE dll_name,EntryPoint [optional_arguments]

Key
   dll_name     A full path to the DLL to ensure that the correct one is found.
                For best results, use the short file name.

   EntryPoint   The name of the entry point function.

The comma (,) between the dll_name and the EntryPoint function name is required.
If the comma separator is missing, Rundll32 will fail without indicating an error.

In addition, there cannot be any white spaces in between the dll_name, the comma, and theEntryPointfunction.

Examples

Add a Network Printer:
RUNDLL32 printui.dll,PrintUIEntry /ia /c\\server /m "AGFA-AccuSet v52.3"
   /h "Intel" /v "Windows 2000" /f %windir%\inf\ntprint.inf


Add a Local Printer:
RUNDLL32 printui.dll,PrintUIEntry /if /b "Test Printer" /c\\SERVER
   /f "%windir%\inf\ntprint.inf" /r "lpt1:" /m "AGFA-AccuSet v52.3"


Add a printer connection that's available to anyone who logs on:
Rundll32 printui.dll,PrintUIEntry /ga /n\\Server\PrintShare

Display the per-Machine printer connections:
RUNDLL32 printui.dll,PrintUIEntry /ge /c"\\workstation64"

Display all the available commands for PRINTUI.DLL - add/remove print drivers, print queues, preferences, properties etc:
RUNDLL32 printui.dll,PrintUIEntry /?

Clear IE Tracks:

RunDll32.exe InetCpl.cpl,ClearMyTracksByProcess number

where number is one (or several added) of the following values:

   1   Browsing History
   2   Cookies
   4   Temporary Internet Files
   8   Offline favorites and download history
  16   Form Data
  32   Passwords
  64   Phishing Filter Data
 128   Web page Recovery Data
 256   Do not Show GUI when running the cache clear
 512   Do not use Multi-threading for deletion
1024   Valid only when browser is in private browsing mode
2048   Tracking Data
4096   Data stored by add-ons
8192   Preserve Cached data for Favorite websites

Lock workstation:
RUNDLL32.exe user32.dll, LockWorkStation
n.b. this is an unsupported hack, which may fail in the future - details on oldnewthing

“If you're rich you can buy books. If you're poor, you need a library” ~ John Kenneth Galbraith

Related:

Qchange.vbs - Change Printer Connection
PRNCNFG - Configure or rename a printer.
PRNMNGR - Add, delete, list printers and printer connections.
REGSVR32 - Register or unregister a DLL
WMIC PRINTER - Set printing options through WMI.
Q164787 - Rundll32 command line.
PowerShell: Get-WmiObject - Get WMI information


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