What is FOLDER? What Opens a FOLDER? File Format List from WhatIs.com

File Extension

FOLDER File Format

Windows Explorer folder file

FOLDER is a file extension used to define a Windows Explorer folder. FOLDER extensions are used in the Windows Registry to define a folder and contains the folder characteristics. The contents of the FOLDER file are used as a template when creating new folders from within Windows Explorer.

The FOLDER file extension is also used for Macintosh folder extension files.

Learn more about .FOLDER files:

See questions and answers about working in Windows Explorer.

Visit the Microsoft web page.

How to read Registry Values at ITKnowledgeExchange.com.

See tutorials on working with folders in Windows Explorer.

This was last updated in August 2010
Editorial Director Margaret Rouse

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