Windows Vista/7: How to delete file extensions/associations

Within Windows XP it is so easy to delete an file extension:

file_extension_xp[3]

But in Windows Vista/7 this is not so easy anymore:

image

Maybe it is concerning security or system stability, but whatever it is, it is a drawback for IT professionals…

So how to delete it?

There are two ways:

1.) Search the whole registry for that file extension and delete the entries or delete that extensions at this common file extensions places:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExcts\

HKEY_CURRENT_USER\Software\Classes\

HKEY_CLASSES_ROOT\

HKEY_LOCAL_MACHINE\Software\Classes\

2.) Use UNASSOC (<-Click to reach the download page):

image

REM: Some users state that ASSOC and FTYPE within the Command Prompt should help too but I cannot confirm that…

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