How to show hidden files and file extensions on Windows 11

2 min read · 5 steps · Updated 2 October 2026

Windows hides two things by default: system folders such as AppData, and the ending of each file name that says what kind of file it is. Both can be shown with two clicks, and hidden again the same way.

These steps are for Windows 11. The pictures are diagrams of the keys to press.

Step by step

1. Open File Explorer

   Press Windows + E, or click the folder icon on the taskbar.

   Done

2. Click View

   It is in the bar at the top of the window.

   Done

3. Point to Show

   It is the last entry in the menu.

   Done

4. Click Hidden items

   Hidden files and folders now appear, with slightly paler icons. A tick in the menu shows that the option is on.

   Done

5. Click File name extensions

   Open View, Show again and click File name extensions. Every file now shows its ending, for example report.docx or photo.jpg.

   Done

Good to know

Files are hidden for a reason. Do not delete or move things in folders such as AppData or ProgramData unless a trustworthy guide tells you exactly what to do.

Showing extensions is a safety habit. A file called invoice.pdf.exe is a program, not a PDF, and with extensions shown you can see that before you open it.

With extensions shown, be careful when renaming: change only the part before the dot, or the file may no longer open.

To clear space instead of hunting through hidden folders, see how to free up disk space on Windows 11.

In short: Windows + E, View, Show, Hidden items. File name extensions is in the same menu.