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Tuesday, August 4, 2015

Hidden extensions in Windows 7/8/8.1/10

I tested several file explorers from Windows 7 to Windows 10.

It seems that even after setting Windows Explorer to:
- show hidden files
- show known file extensions
- show protected system files

...there are still some hidden extensions. I found out about this by accident.

For example, there's a hidden suffix ".library-ms".

Check out this screenshot I took from Windows 7:

HDDB (a free quick search app) and XYplorer (paid file explorer) can correctly display the real filenames.

However, Windows Explorer and Q-Dir (free file explorer) - Do NOT.
It's the same in Windows 8.x and Windows 10.

There are also other hidden extensions, such as .LNK (shortcut) files.

If you wanna see all these hidden extensions, run this code:

REM *** Show super-duper hidden extensions [basically deleting the NeverShowExt (REG_SZ) values] ***
REM *** Source info: www.askvg.com/tip-how-to-show-file-extensions-of-shortcuts-lnk-url-pif-in-windows-explorer/ ***
REM .LNK (File/Folder Shortcut)
REM .URL (Internet Shortcut)
REM .PIF (MS-DOS Program Shortcut)
REM .SCF (Windows Explorer Command)
REM .SHS (Shell Scrap Object)
REM .SHB (Document Shortcut)
REM .XNK (Exchange Folder Shortcut)
REM .library-ms (Library folder)

reg delete "HKEY_CLASSES_ROOT\lnkfile" /v "NeverShowExt" /f
reg delete "HKEY_CLASSES_ROOT\IE.AssocFile.URL" /v "NeverShowExt" /f
reg delete "HKEY_CLASSES_ROOT\IE.AssocFile.WEBSITE" /v "NeverShowExt" /f
reg delete "HKEY_CLASSES_ROOT\InternetShortcut" /v "NeverShowExt" /f
reg delete "HKEY_CLASSES_ROOT\Microsoft.Website" /v "NeverShowExt" /f
reg delete "HKEY_CLASSES_ROOT\piffile" /v "NeverShowExt" /f
reg delete "HKEY_CLASSES_ROOT\SHCmdFile" /v "NeverShowExt" /f
reg delete "HKEY_CLASSES_ROOT\LibraryFolder" /v "NeverShowExt" /f