How to use the rundll32.exe file in Windows
Below are some examples of how the rundll.exe rundll32.exe files can be used in Microsoft Windows to perform Windows commands from the command prompt. Because of the different versions of rundll and rundll32, not all of the options below work. If rundll or rundll32 encounter an error, the command fails without any error messages.
Shutdown, restart, logoff, or poweroff the computer
Lock the Windows 2000 and Windows XP workstation
Run the install for an inf file
Run the install for an inf file.
rundll32.exe setupapi,InstallHinfSection DefaultInstall 132 <inf file>
Open the "Open With" folder for a file
Below is a command that can be run from the command line to open the Open With window for a particular file.
rundll32.exe shell32.dll,OpenAs_RunDLL <directory or file>
Run copy disk program
Below is an example of how the copy disk window can be opened from the command line.
Create a new shortcut
Open the create shortcut wizard icon by typing the command below into the command prompt. The "NewLinkHere" is case sensitive and generates an error if not typed in properly.
rundll32.exe appwiz.cpl,NewLinkHere <directory>
Open the screen saver window