KB ID 0000655
Windows, by.default hides file extensions.
Note: Only for files it understands.
e.g. In the example below it does not know what a .doc extension is so it shows it (because Word has not been installed yet).
Show File Extensions
Also hidden files and folders are not shown.
Show Hidden Files and Folders
I know these are two different things, but I usually set them both together, and they’re both set on the same menu.
1. Open Windows Explorer by pressing the Windows Key+E.
2. View > Options > Select the drop down arrow > View.
To Show Hidden files and folders select “Show Hidden Files, folders and drives“.
File Extensions UNTICK “Hide extensions for known file types“.
3. Apply > OK > Close Windows Explorer.
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