Hello,I have managed to get constraint delegation working in the past but this week things are not going to well.I have the following code : WindowsIdentity wi = new WindowsIdentity("user@domain.local"); WindowsImpersonationContext imp = wi.Impersonate(); Console.WriteLine(wi.AuthenticationType); Console.WriteLine(wi.ImpersonationLevel); imp.Undo();I would expect the output of wi.ImpersonationLevel to be delegete but I get Impersonation.I have made sure the following are true :The Machine that my test is running on has Constraint delegation to another PC. I did with using AD / Delegation Tab, selected Trust this computer for delegation to specified services only and I entered some http services.I have made sure the account running the code has act as part of operating system.At present I am not calling the remote code so I don’t need SPNs yet. But... UI have got them ready. I have an SPN for :http/remote remote http/remote.fqnd remoteand (I dont think I need these)host/local dom\accounthost/local.fqnd dom\accountKerb tray shows the tickets but delegation flag is not set. I have tried this on two domains.ThanksSteve

Hi Steve,I see that your problem is more towards programing, this forum does not answer questions related to programing.For your convinience i have pasted the link below . Please post your query under MSDN forums.http://social.msdn.microsoft.com/Forums/en/categories/