Viewing Downloaded CHM Files

A recent security update (Security Update for Windows XP - KB896358) has modified the behavior of files you download from the Internet. In this case, the download in question is the Team Foundation Installation Guide .chm file.

Option 1

After saving the file locally (for example, to your Desktop), try to open the file. You’ll see a message that looks like this:

Security Warning

To view the content in this file, click to clear the Always ask before opening this file check box, and then click Open.

Option 2

Or, right-click the file, click Properties, and then on the General tab click Unblock.

File Properties

I should've caught this when the Assistance Platform folks posted this.

And then there is this: After you install security update 896358, downloaded Compiled Help Module files cannot be opened.