Error in accessing Web Service in VSTA code of Infopath Form

When I am trying to access the web serice method in the VSTA code of Infopath form, I was getting the following error message:

The error message is “There is an error in XML document (1, 302)."

The stack trace is “ at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)

at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle)

at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)

at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)

at EmpSepChkLst.AD_SEARCH.NDAWebService.SerachUserInDomain(String UserName)

at EmpSepChkLst.CommonFunctions.GetUserInfo(String CurrentUserId)”.


The solution for this is:

You need to publish the infopath form with full permission( Tools -> Form Options -> Security and Trust -> Select Full trust). I was publishing with "Domain" permissions and it was throwing the error while opening the infopath form from Sharepoint Document Library.