Show file extensions in Windows

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Displaying file extensions is useful in troubleshooting and other uses. Windows operating systems do not display file extensions by default.

Windows 7

To enable filename extensions in a Windows 7 environment,refer to these instructions from Microsoft. External link (What's this?)

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Windows 8

Use one of the following procedures to show filename extensions in a Windows 8 environment.

Enable filename extensions from the File Explorer

  1. Swipe from the right edge of the screen and tap Search to open File Explorer (or if you're using a mouse, point to the upper-right corner of the screen, and then click Search), enter File Explorer in the search field, and then tap or click File Explorer.
  2. In File Explorer, click the View tab.
  3. Mark the Filename extensions checkbox in the ribbon.

Enable filename extensions from the Folder Options dialog

  1. Swipe from the right edge of the screen and tap Search to open File Explorer (or if you're using a mouse, point to the upper-right corner of the screen, and then click Search), enter File Explorer in the search field, and then tap or click File Explorer.
  2. In File Explorer, click the View tab.
  3. Click the Options pull-down menu in the ribbon and choose Change Folder and Search Options.
  4. In the View tab of the Folder Options dialog, clear the Hide extensions for known file types checkbox.
  5. Click or tap OK.

Windows 10

  1. From the Windows File Explorer (Windows Start menu > This PC or press Win + E on your keyboard), click the View tab. 
  2. Put a checkmark next to File name extensions. 

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