Show file extensions for known file types

File ExplorerAll Windows 10/11 versionsRevertible

This will show file extensions for known file types. By default, Windows hides file extensions for known file types which can lead to confusion and security risks.

Code to Apply

Show file extensions for known file typesRegistry
Windows Registry Editor Version 5.00


[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]

"HideFileExt"=dword:00000000

Code to Revert

Hide file extensions for known file typesRegistry
Windows Registry Editor Version 5.00


[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]

"HideFileExt"=dword:00000001

Want to combine this with other tweaks?

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By default, Windows hides certain files, folders and drives to prevent accidental modification or deletion. Turn this on to show all files in File Explorer.