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Thursday, July 30, 2009

An Utility to Unassociate File Types in Windows 7 and Vista

The utility discussed in this article helps you unassociate a file type quickly in your Windows Vista or Windows 7 PC. Windows 7 & Vista do not provide a GUI option to unassociate file types. That's the reason I wrote this simple tool.

Unassociate file types in Windows 7 & Windows Vista

  • Download unassoc.zip from the Attachments section, and save to Desktop
  • Extract the contents to a folder and run the file unassoc.exe
  • Select the file type from the list
  • Click Remove file association (User)

The user-specific association for the chosen file type is now removed from the registry. The system will now use the global file association settings.

Screenshot

More information

Command Description
Remove file association (User) Removes the user-specific association (via the Open With dialog) for the chosen file type. Note that this button will remain dimmed if there is no user-specific association for the file type.
Delete file type Deletes the file type completely from the registry. Both the user-specific and global associations for the chosen file type is removed.
Refresh list Refreshes the list box contents.

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