Persits Software, Inc. Knowledge Base Articles

A bug in IE 5.5 SP1 causes an ASP file to be downloaded

Problem Description

When downloading a file with IE 5.5 SP1 using the method SendBinary ( Path, True, "application/octet-stream", True), the user is prompted to open or save the ASP file instead of the actual file being downloaded.


This behavior occurs due to a Microsoft-confirmed bug in IE 5.5 SP1. This problem is descibed in the Microsoft knowledge base article Q279667 which can be found at

Microsoft has released a fix to the problem. See the following article for details:

We have also received a report of this occurring with IE 5.5 SP2. Microsoft's fix for that is here:;en-us;810847