Help files (CHM) don't work
So in Vista and/or IE8 there seems to be an issue with CHM files which you have downloaded from the Internet, where they just do not load their content.
I stumbled across this with the HMC 4.5 documentation which is presented in, you guessed it, CHM help files. Just like when I found the MSDN Library Broken this is caused by a security feature trying to protect you. To resolve this you need to close the file, right click and select properties. On there in the bottom right hand corner is a nice little Unblock button which once clicked you can then use the file normally.



i was had same problem.
i fix it by check the option which says "do show this again" in the dialog (open),(close)
and working fine
my operating system is windows 7
i hope that i help some one.
the dialog message is "don't show this again" or some thing like that
thanks
Thank you! This is solved my problem.
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