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New Things I Learned

I downloaded a CHM (Windows help) file for SharpZipLib software package to be used in my test app (pretty cool - allows me to do most stuff relating to zip files), and when I open the help file, none of the information shows.

Of course when I tried to open it up, Windows always asks me to verify that I wanted to open the file, with the dialog below:

However, even if I do allow this, the CHM file doesn't show its contents; the IE control that should display the help contents only show that the Program cannot display the webpage.  It turns out that this is a side effect of an IE security update - downloaded files are marked as untrusted and thus will require user's verification before it can be opened.  However, even if you verify for opening the files, the file itself is still marked untrusted, and as such IE will not allow rendering the information on the screen.

To fix this, you'd have to mark the uncheck the 'Always ask before opening this file' checkbox, and you're good to go.  You can also go to the file's properties and click the Unblock button near the bottom.  This situation puzzles me for a few minutes before the light bulbs start switching on.  I'm pretty sure I will get this again in the future and be puzzled the same way .

Posted on Monday, April 28, 2008 4:53 PM Windows | Back to top

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