Some references I'd like to save for potential personal future use. Client-side token cache for WCF "WCF by default maintains a cache for security tokens per channel instance (A channel is related to a contract). Therefore, it is not possible...
In our project we build services in the intranet zone, therefore windows authentication is really the most simple and sufficient authentication mode for us. Lately though, we have encountered continuing troubles with Kerberos Delegation, Most of the times...