I am developing an asp.net application to generate a report and open it in MS Word. That was working fine in Windows Server 2003. But after applying patches to Windows, when I try to download that MS Word file from my web application, I am getting a message \[quote\] The file you are downloading cannot be opened by the default program. It is either corrupted or it has an incorrect file type. As a security precaution, it is recommended that you cancel the download\[/quote\]The same application is working fine in Windows 7. Any suggestions how I can resolve this warning?