No connection could be made because the target machine actively refused it 127.0.0.1:25 - sockets

Question

I get this error while running web services using a web application.
No connection could be made because the target machine actively refused it 127.0.0.1:8083
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:8083
Source Error:
Line 108: [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/VerifyFingerPrint", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
Line 109: public string VerifyFingerPrint([System.Xml.Serialization.XmlElementAttribute(DataType="base64Binary")] byte[] VeriBmp, string empcode) {
Line 110: object[] results = this.Invoke("VerifyFingerPrint", new object[] {
Line 111: VeriBmp,
Line 112: empcode});
Source File: D:\Mayuri1working\BOBFingerPrint\BOBFingerPrint\Web References\localhost\Reference.cs Line: 110
Please help !

Answer 1

First update your web service references used in your application.
If web service references are not get updated, then check all files and folder containing source code files in your web service project solution and rebuild it and then update web references used in your project.
Else if its working fine then you need to check your network services used by your development server and windows firewall settings as suggested in above solutions.
I also encountered same problem and I came to know that I was referencing wrong folder having same name but used in another solution.
Enjoy codding.