A Utility to Unassociate File Types in Windows 7 and Vista


Here is a utility that helps you unassociate a file type quickly in your Windows Vista or Windows 7 computer without the need to edit the registry manually. Windows 7 & Vista do not provide a GUI option to unassociate file types, thus the need arises for such a tool below.

Unassociate file types in Windows 7 & Windows Vista

  • Download unassoc.zip 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.

More information

CommandDescription
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 typeDeletes the file type completely from the registry. Both the user-specific and global associations for the chosen file type is removed.
Refresh listRefreshes the list box contents.

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134 Comments

  1. Russell L
    said this on Wednesday, April 16th 2014 11:58 pm

    Used it for Windows 7 and .dbf files. worked great, thanks a ton!!!!

  2. said this on Friday, April 11th 2014 9:45 am

    @Seymore: Get the .lnk file association fix from:
    http://www.winhelponline.com/blog/file-asso-fixes-for-windows-7/

  3. Seymore Butz
    said this on Friday, April 11th 2014 7:19 am

    What do i do if i accidentally got rid of the .lnk files with “Delete File Type”

  4. said this on Thursday, March 27th 2014 7:36 am

    @Don:1. Download FileExtInfo.zip from here:
    http://windowsxp.mvps.org/fileextinfo.htm

    2. Unzip the utility and extract the files to Desktop.
    3. Double-click “FileExtInfo.exe” to run it.
    4. Select .BAT file type from the list box
    5. Click “View file association report”
    6. Copy the contents of the report and include it in your reply.

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