As I'm running version 10.2.4 I also checked the older Deployment Guide for v10, but for Exchange 2010.
I tried now different "start URIs" (the one mentioned in the Guide or just "/owa/") and also included the hidden parameter values, but doesn't seem to matter. In the log I'm still getting "no start URI match", even if the configured and requested one are the same. The response from the server is always 403 Forbidden.
So what are the correct values for form based SSO in version 10.2.4 with Exchange 2013?
Thank you!
Ciao Stefan :)