If you are running your Coldfusion Server with IIS7 and you use Windows Authentication you should be aware that you might
encouter a bug if you try to use a cfdocument tag like:
<cfdocument format="pdf">
Hello World <img src="images/world.png">
</cfdocument>
The problem here is that Coldfusion will use http to get the image when building the PDF, and because this site uses Windows Authentication it crashes.
How to solve it?
<cfdocument format="pdf" localUrl="true">
Hello World <img src="images/world.png">
</cfdocument>
This solves this bug and also improves perfomance because CF will convert images/world.png to a physical path like file://E:/images/world.png