What are the .cpl files in the system32 directory?

A. Each .cpl file represents one or more control panel applets (Start - Settings - Control Panel). Below is a list of common .cpl files and what Control Panel Applets they represent

.cpl file name Control Panel Applets
ACCESS.CPL Accessibility options
APPWIZ.CPL Add/remove programs
CONSOLE.CPL Console
DESK.CPL Display
DEVAPPS.CPL PCMCIA, SCSI adapters and tape drives
INETCPL.CPL Internet
INTL.CPL Regional Settings
JOY.CPL Joystick
MAIN.CPL Fonts, keyboard, mouse and printers
MLCFG32.CPL Mail
MMSYS.CPL Sounds and multimedia
MODEM.CPL Modems
NCPA.CPL Network
NTGUARD.CPL Dr Solomons
ODBCCP32.CPL ODBC
PORTS.CPL Ports
RASCPL.CPL Dial up monitor
SRVMGR.CPL Server, services and devices
SYSDM.CPL System
TELEPHON.CPL Telephony
TIMEDATE.CPL Date/time
TWEAKUI.CPL TWEAKUI
UPS.CPL UPS

If you renames any of these files then the items they represent in the Control Panel would not be shown, e.g.
rename timedate.cpl timedate.non
would remove the date/time control panel applet.

Also, setting HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoSetFolders (REG_DWORD) to 1 will hide the Control Panel, Printers and My Computer in Explorer and Start Menu. You would normally need to create this value as it does not exist by default.


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