K2 Blackpoint K2 Blackpearl does not support single sign on authentication
By peter.stilgoe
FYI Neither K2 Blackpoint or K2 Blackpearl support SSO, they only support Windows authentication. K2 Connect (SAP) makes use of SSO in some aspects.
If you are trying to use in an SSO environment you will see errors similar to:
Unable to cast object of type ‘System.Web.Security.SingleSignOn.SingleSignOnIdentity’ to type ‘System.Security.Principal.WindowsIdentity’
Update: Apparently Blackpearl users can create a custom security provider to handle SSO authentication.
More From pstilgoe
K2 Blackpearl , K2 Blackpoint , SSO 


March 10th, 2010
