Good morning, I have a strange Problem. A Winhttp Application is run over a squid proxy with NTLM activated. On Windows XP PCs I see a correct NTLM "handshake" up to NTLMSSP_CHALLENGE with correct response. On Windows 7 PCs I see the same Trace with the exception, that the TCP connection is closed on receiving the NTLMSSP_CHALLENGE and the response is send on a new TCP connection. The problem seems now that the NTLMSSP_CHALLENGE was send with UNICODE=1, the response is sent therefore in UNICODE (UTF16), but the Proxy lost the information that UNICODE was requested, therefore the Response is not accepted. I have seen in the MSDN that the WinHTTP Api has changed a bit with Vista SP2, but didn't found a clue what could cause this different behaviour. Do you know of such a Problem, and if so, how to fix it? kind regards Wolfgang
