How to show file extensions in Windows 10
- Open the File Explorer by clicking the folder icon in the Task Bar. You can also use the Windows key shortcut (Win+E) to open it.
- Click the menu and the top of the window.
- Check the File name extensions checkbox in the top section of the window to show file extensions.
- If you want to hide file extensions again, simply uncheck the checkbox.
Updated: September 17, 2015