Just to let you know I'm following this topic with a lot of interest. I'm more or less in the same spot as Wendy. We're running SQL server 2012 on Windows Server 2012 and our SharePoint version is SPO 2010 (we didn't get move to 2013 yet). I started out by having the 403 error and, after installing the beta solution, now have the 401 one.
Thanks a lot for the support, it's really appreciated!
Fred
