I have a large collection of Windows exe files which are being stored/distributed using Amazon S3. We use signed URLs to control access to the files and this works great except in one case when trying to download a .exe file using Internet Explorer (version 8). It works just fine in Firefox. It also works fine if you don't use a signed URL (but that is not an option).

What happens is that the IE downloader changes the name from 'myfile.exe' to 'myfile[1]' and Windows no longer recognizes it as an executable. Any advice would greatly be appreciated.

Thanks.