Enabling File Extension Display in Explorer via Registry Key

Registry Key Script

Here is a script to enable the display of file extensions in Windows Explorer by modifying the registry:

cmdCopier le code:: Show file extensions in Explorer
reg load HKLM
cmdCopier le code:: Show file extensions in Explorer
reg load HKLM\0000 c:\users\default\ntuser.dat
reg add "HKLM\0000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t REG_DWORD /f /D 0
reg unload HKLM\0000
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t REG_DWORD /f /D 0
%windir%\System32\RUNDLL32.EXE user32.dll, UpdatePerUserSystemParameters
00 c:\users\default\ntuser.dat
reg add "HKLM
cmdCopier le code:: Show file extensions in Explorer
reg load HKLM\0000 c:\users\default\ntuser.dat
reg add "HKLM\0000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t REG_DWORD /f /D 0
reg unload HKLM\0000
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t REG_DWORD /f /D 0
%windir%\System32\RUNDLL32.EXE user32.dll, UpdatePerUserSystemParameters
00\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t REG_DWORD /f /D 0
reg unload HKLM
cmdCopier le code:: Show file extensions in Explorer
reg load HKLM\0000 c:\users\default\ntuser.dat
reg add "HKLM\0000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t REG_DWORD /f /D 0
reg unload HKLM\0000
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t REG_DWORD /f /D 0
%windir%\System32\RUNDLL32.EXE user32.dll, UpdatePerUserSystemParameters
00
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t REG_DWORD /f /D 0
%windir%\System32\RUNDLL32.EXE user32.dll, UpdatePerUserSystemParameters

Using the Script

1. Create the script:
   • Copy the above script into a file named ShowFileExtensions.cmd.
2. Run the script:
   • Open Command Prompt with administrative rights.
   • Navigate to the directory where the script is saved.
   • Execute the script:cmdCopier le code.\ShowFileExtensions.cmd
3. Verification:
   • Open Windows Explorer and navigate to a folder with files.
   • Verify that file extensions are now visible.

Explanation of the Script

• Loading the registry hive:cmdCopier le codereg load HKLM\0000 c:\users\default\ntuser.dat This loads the default user hive so that changes can be made for new user profiles.
• Modifying the registry key to show file extensions:cmdCopier le codereg add "HKLM\0000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t REG_DWORD /f /D 0 reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t REG_DWORD /f /D 0 These commands set the HideFileExt value to 0 in both the default user hive and the current user hive.
• Unloading the registry hive:cmdCopier le codereg unload HKLM\0000 This unloads the default user hive after making the changes.
• Updating system parameters:cmdCopier le code%windir%\System32\RUNDLL32.EXE user32.dll, UpdatePerUserSystemParameters This command applies the changes without needing to log off or restart the computer.