Unused Authorization Policy equals broken site #724
Trying to convert my site to using Windows Auth caused me a great deal of headache.
In the end I found out that if you add a new-UDAuthorizationPolicy that isn't used on any of your pages, the entire site breaks and you're left with a grey page (or I guess depending on theme).
If I misspell "HumanResources" in the -authorizationPolicy on any of my pages, the site breaks.
I don't know if its intentional or if it even something that needs to be fixed, but it did certainly bug me.