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Windows File Extension Removal Guide

To remove an extension association in Windows, open the registry editor and delete the subtrees for that extension under HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\ and HKEY_CLASSES_ROOT\. Additionally, delete the _auto_file subtree under HKEY_CLASSES_ROOT\. While Windows does not directly support this, alternative tools online can also remove extension associations.

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Serkan Sancak
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41 views1 page

Windows File Extension Removal Guide

To remove an extension association in Windows, open the registry editor and delete the subtrees for that extension under HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\ and HKEY_CLASSES_ROOT\. Additionally, delete the _auto_file subtree under HKEY_CLASSES_ROOT\. While Windows does not directly support this, alternative tools online can also remove extension associations.

Uploaded by

Serkan Sancak
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Let .<ext> be the extension you want to deassociate.

With a registry editor (e.g. regedit.exe),

1. go to

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\

remove the subtree .<ext>

2. go to

HKEY_CLASSES_ROOT\

remove the subtree .<ext>

remove the subtree <ext>_auto_file

This cannot be done directly in Windows, but... there are alternatives like

http://www.winhelponline.com/downloadattachment.php?
aId=9f390841cdbe0c2457898179b80dfce0&articleId=231

or

http://www.creativelement.com/powertools/#download

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