problem in using Sharepoint webservice in iphone

Currently getting this following error:

You do not have permission to view this directory or page using the credentials that you supplied because your Web browser is sending a WWW-Authenticate header field that the Web server is not configured to accept.

i cant able to get the response from the share point开发者_运维知识库 server. Can any one help me in this.

Thanks in advance

You might want to check with Apple's developer forums but at some recent point they introduced a bug into their development toolchain that prevented authentication against NTLM protected resources.