Article ID: 927117
Microsoft Internet Explorer 5.01 Service Pack 4 includes a list of "unsafe" file types. The purpose of this list is to prevent you from accidentally opening a file that could cause problems on the computer.
The Microsoft Internet Explorer 5.01 Service Pack 4 unsafe file list has been updated to be consistent with the Microsoft Office unsafe file list. File types that use the following file name extensions have been added to the list:
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.