By default, Windows 11 tries to make the operating system look as clean and user-friendly as possible. One of the ways it does this is by hiding known file extensions. If you download a photo named vacation.jpg, Windows simply displays the name as vacation. While this looks tidy, it is actually one of the most dangerous default settings on your computer, making it incredibly easy for hackers to trick you into opening malware.
The Security Risk of Hidden Extensions
Malware authors rely on deception. A common tactic is to create a malicious, executable virus program (which always ends in .exe) and give it the icon of a harmless PDF document. They will name the file something like Invoice.pdf.exe.
Because Windows hides the true, final extension (the .exe part) by default, all you see on your desktop is a file named Invoice.pdf with a PDF icon next to it. It looks completely legitimate. You double-click it expecting to see a bill, and instead, you silently install a virus. Forcing Windows to show you the true file extension is the easiest way to spot this scam immediately.
How to Show File Extensions in Windows 11
Uncovering the true identity of your files takes less than ten seconds.
- Click the yellow folder icon on your taskbar to open File Explorer (or press the Windows Key + E).
- Look at the menu bar running horizontally across the top of the window. Click on View.
- A dropdown menu will appear. Move your mouse down to the bottom and hover over Show.
- In the secondary menu that pops out to the right, click on File name extensions to place a checkmark next to it.
The change is instantaneous and applies system-wide. Look at the files on your desktop or in your Downloads folder. You will now see that your Word documents clearly end in .docx, your photos end in .jpg or .png, and your applications end in .exe.
If you ever download a file that claims to be a picture or a document, but the text now clearly shows it ends in .exe, .bat, or .scr, delete it immediately. It is a trap.