Showing File Name Extensions on Windows 10/11

By default, Microsoft Windows 10 and 11 do not show file extensions for known file types. This can result in problems when you need to rename files.

Instructions for Windows 10

1. Open a new File Explorer window.
2. Switch to the View tab/ribbon.
3. On this tab, if the File name extensions checkbox is not ticked, put a check/tick mark in it by clicking it.

Instructions for Windows 11

1. Open a new File Explorer window.
2. Click the View hamburger menu/dropdown menu.
3. Go to Show at the bottom and ensure that File name extensions is ticked.

TIP