IIS Active Directory double handshake hickup
I have a .net 2.0 click-once application that connects to IIS web services on Windows 2003 R2 64-bits.  The IIS is setup with Integrated Windows Authentication.  

So whenever a web service call is made to IIS web services, there is a double handshake taking place:

Client Request #1 

> GetEmployeeList

Server Response #1 <- 401

    HTTP/1.1 401 Unauthorized
    WWW-Authenticate: Negotiate
    WWW-Authenticate: NTLM

Client Request #2
    
> REQUEST Header...

Server Response #2 <- 200 
    
> Data Received


Lately, however, Server Response #1 will sometimes (a good 20 percent of the calls) take a massive amount of time (like 25 to 30 seconds).  

How do I debug this problem?  Is this a Active Directory problem or a Domain Controller problem?



IIS Active Directory double handshake hickup
===

I have a .net 2.0 click-once application that connects to IIS web services on Windows 2003 R2 64-bits.  The IIS is setup with Integrated Windows Authentication.  

So whenever a web service call is made to IIS web services, there is a double handshake taking place:

Client Request #1 

> GetEmployeeList

Server Response #1 <- 401

    HTTP/1.1 401 Unauthorized
    WWW-Authenticate: Negotiate
    WWW-Authenticate: NTLM

Client Request #2
    
> REQUEST Header...

Server Response #2 <- 200 
    
> Data Received


Lately, however, Server Response #1 will sometimes (a good 20 percent of the calls) take a massive amount of time (like 25 to 30 seconds).  

How do I debug this problem?  Is this a Active Directory problem or a Domain Controller problem?


