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Please note that the file may not open properly due to a security patch.
The cause:Security update 896358 and Windows Server 2003 SP1 include changes to the InfoTech protocol that block the ability to view remote content. These changes were introduced to reduce security vulnerabilities in HTML Help. After you install 896358 or Windows Server 2003 SP1, files in the Temporary Internet Files folder are treated as content from the Internet zone. Therefore, files may be blocked when you click Open in the File Download dialog box. Additionally, after you install 896358 or Windows Server 2003 SP1, Attachment Manager may treat a downloaded .chm file as an untrusted file. Therefore, you may not be able to open the file. These effects are expected and intended effects of installing the security update and of installing Windows Server 2003 SP1.
The solution:Resolution for end users Warning If you are prompted to open or to save a .chm file from a Web site, you should do so only if you need the file and if you trust the Web site that is providing the file. In the File Download dialog box, click Save, and then choose where you want to save the .chm file. Then, use one of the following methods:
Double-click the .chm file.
In the Open File-Security Warning dialog box, click to clear the Always ask before opening this file check box.
Right-click the CHM file, and then click Properties.
Double-click the .chm file to open the file.
You can read more about this issue by vising the Microsoft support site at: http://support.microsoft.com/kb/902225
Wednesday, August 15, 2012