How to Show File Extensions and Hidden Files in Windows 11 File Explorer

By default, Windows 11 conceals file extensions (such as .docx, .pdf, .exe, or .png) and hides critical system folders (like AppData and ProgramData). While Microsoft originally introduced this behaviour to prevent novice users from accidentally renaming extensions or modifying core system components, hiding extensions makes it difficult to differentiate between text documents and scripts, or identify malicious files masquerading as harmless images (such as invoice.pdf.exe). Enabling these two settings gives you complete visibility over your local filesystem.

Why You Should Enable File Extensions and Hidden Files

Revealing extensions and hidden directories provides important daily advantages:

• Enhanced Security Protection: Immediately reveals deceptive executable files and dangerous scripts before you double-click them.
• Precise File Renaming: Allows developers, designers, and students to quickly change file formats (e.g., converting .txt to .csv or .html) directly in File Explorer.
• Troubleshooting Application Data: Unhiding directories gives you direct access to user configuration files, game saves, and browser profiles stored inside the hidden C:\Users\[Username]\AppData folder.

Method 1: Show File Extensions Using the View Command Bar (Fastest)

Windows 11 makes toggling extensions easier than any previous Windows version:

1. Press Windows Key + E to launch File Explorer.
2. Click on the View button located in the top command bar.
3. Hover your cursor over the Show submenu at the bottom of the list.
4. Click on File name extensions. A checkmark will appear next to it, and all files across your PC will immediately display their three- or four-letter extensions.
5. Hover over Show again and click on Hidden items. Previously hidden folders (such as AppData) will appear with slightly faded, translucent icons.

Method 2: Configure Advanced Folder Options

If you need deeper control or want to reveal protected operating system files:

1. In File Explorer, click the three horizontal dots (…) at the far right of the top toolbar.
2. Select Options to open the classic Folder Options dialogue.
3. Switch to the View tab.
4. Under Files and Folders > Hidden files and folders, click the radio button for Show hidden files, folders, and drives.
5. Scroll down slightly and uncheck the box labelled Hide extensions for known file types.
6. Click Apply, then click OK.

With these two settings active, your File Explorer presents an honest, transparent view of every file on your computer, making technical tasks and security audits much easier.