According to the result monitored by fiddler, there are totally 3 handshakes for integrated windows authentication for IE. GET /home - 401 Unauthorized WWW-Authenticate: Negotiate, NTLM GET /home Authorization: Negotiate UYTYGHGYKHKJPPP-=== - 401 Unauthorized WWW-Authenticate: Negotiate UYUGKJKJKJ+++766== Get /home Authorization:…