Hi Dan, Thank you for the response. I now have curl with SSPI support, now the problem is whether i manually enter the credentials or not i get the same error message. curl: <56> Failure when receiving data from the peer The command has not changed  and curl looks like below. curl 7.30.0 (i386-pc-win32) libcurl/7.30.0 OpenSSL/1.0.0k zlib/1.2.7 libidn/1.18 libssh2/1.4.3 Protocols: dict file ftp ftps gopher http https imap imaps ldap pop3 pop3s rtsp scp sftp smtp smtps telnet tftp  Features: AsynchDNS GSS-Negotiate IDN Largefile NTLM SSL SSPI libz  I can download the file using cURL while entering the credentials manually, using a build which does not have SSPI. Am i missing something here ? The proxy requires domain to be passed to it along with the username & password.   Regards, Telson A ________________________________ From: Daniel Stenberg <daniel_at_haxx.se> To: Telson Alva <telson_alva_at_yahoo.com>; the curl tool <curl-users_at_cool.haxx.se> Sent: Friday, 14 June 2013 5:23 PM Subject: Re: Curl NTLM Proxy authentication On Tue, 11 Jun 2013, Telson Alva wrote: > curl --proxy-ntlm --proxy-user : --proxy %PROXY_URL% --user > %Username%:%Password% -f -O --url "%SITE_URL%" ... > I was under the impression that using ':' would pass on the NT Login > credentials to the server. That trick only works if your curl is built with SSPI support and your curl -V output didn't show any such! :-O --   / daniel.haxx.se

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Received on 2013-06-19