Deleting a file type and all of its extensions

Last published : Apr 02, 2026
You can delete a file type and all its extensions as needed.
To delete a file type and all of its extensions
  1. On the Tasks menu, click Options.
  2. Click File Types.
  3. Select a file type from the File types list, and then do one of the following:
    • Click the Remove a file type to delete a file type and all its extensions.
    • Select an extension from the Extensions forlist and clickRemove an extension to edit the name of the extension.
      Note: You cannot delete a default file type. You can delete all but one extension of a default file type, and you can add additional extensions to a default file type.
  4. Click OK.
See Adding new file types and extensions.
See Renaming file types and extensions.
See Restoring default file types and extensions.
See File types and file extension.
Related information