I am doing an iCal service to allow synchronization between calendar instances and run fantastically on localhost (under VS2010 web server)
But now that I was hosted on Windows 2008 R2 (IIS 7.5.7600) , I could not even create an event update : -o
Thunderbird always said

So, I rush to Fiddler and found a problem

a 405 error

That PUT is not allowed: (
How to enable this method? Application pool? Definition of WebSite? IIS settings?