No connection could be made because the target machine actively refused it 127 0 0 1

Question

I try to connect to a web service hosted on a different server using the WebRequest Class  The web service returns a string as a Response  While doing so I get an Error        System Net Sockets SocketException  No connection could be made   because the target machine actively refused it       System Net WebException  Unable to connect to the remote server ---    System Net Sockets SocketException  No connection could be made   because the target machine actively refused it 127 0 0 1 14012    at   System Net Sockets Socket DoConnect EndPoint endPointSnapshot    SocketAddress socketAddress     at   System Net ServicePoint ConnectSocketInternal Boolean connectFailure    Socket s4  Socket s6  Socket amp  socket  IPAddress amp  address    ConnectSocketState state  IAsyncResult asyncResult  Exception amp    exception     --- End of inner exception stack trace ---    at   System Net HttpWebRequest GetRequestStream TransportContext amp  context     at System Net HttpWebRequest GetRequestStream      at   Limoallover InsertSoapEnvelopeIntoWebRequestUS XmlDocument   soapEnvelopeXml  HttpWebRequest webRequest     at   Limoallover dawUpdateDriverStatus String apiId  String apiKey  String   idTrip  String tripCode  String statusCode     at   Limoallover UpdateJobStatus String Lat  String Lng  Int32 DriverID    Int32 nJobStatus  Int32 nJobId  String CompanyID  String idTrip    String tripCode  String statusCode    private  HttpWebRequest CreateWebRequestUS string url  string action        HttpWebRequest webRequest    HttpWebRequest WebRequest Create url       webRequest Headers Add  SOAPAction   action       webRequest ContentType    text xml charset   utf-8         webRequest Accept    text xml       webRequest Method    POST       return webRequest     private  XmlDocument CreateSoapEnvelopeUS string apiId  string apiKey  string idTrip  string tripCode  string statusCode        XmlDocument soapEnvelop   new XmlDocument         string xml     lt soap Envelope xmlns xsi   http   www w3 org 2001 XMLSchema-instance   xmlns xsd   http   www w3 org 2001 XMLSchema   xmlns soap   http   schemas xmlsoap org soap envelope    gt         xml   xml      lt soap Body gt        xml   xml     lt UpdateTripStatus xmlns   https   book mylimobiz com api   gt        xml   xml      lt apiId gt     apiId     lt  apiId gt        xml   xml      lt apiKey gt     apiKey     lt  apiKey gt        xml   xml      lt idTrip gt     idTrip     lt  idTrip gt        xml   xml      lt tripCode gt     tripCode     lt  tripCode gt        xml   xml      lt statusCode gt     statusCode     lt  statusCode gt        xml   xml      lt  UpdateTripStatus gt        xml   xml      lt  soap Body gt        xml   xml      lt  soap Envelope gt           soapEnvelop LoadXml xml       return soapEnvelop     private static void InsertSoapEnvelopeIntoWebRequestUS XmlDocument soapEnvelopeXml  HttpWebRequest webRequest        using  Stream stream   webRequest GetRequestStream                  soapEnvelopeXml Save stream

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If you have config file transforms then ensure you have the correct config selected within your publish profile   Publish   Settings   Configuration

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Add new WebProxy   for the proxy setting   where you are creating a web request   Example  -    string url     Your URL     System Net WebRequest req   System Net WebRequest Create url     req Proxy   new WebProxy      System Net WebResponse resp   req GetResponse      Where req Proxy   new WebProxy   handle the proxy setting  amp  helps the code to work fine

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If you have this while Fiddler is running -  in Fiddler  go to  Rules  and disable  Automatically Authenticate  and it should work again

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The exception message says you re trying to connect to the same host  127 0 0 1   while you re stating that your server is running on a different host  Besides the obvious bugs like having  localhost  in the url  or maybe some you might want to check your DNS settings

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I had the same issue with a site which previously was running fine  I resolved the issue by deleting the temporary files from C  WINDOWS Microsoft NET Framework v          Temporary ASP NET Files  projectName    CC  C    C CC

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After six days I find the answer which make me crazy  The answer is disable proxy at web config file    lt system net gt     lt defaultProxy gt        lt proxy usesystemdefault  False   gt      lt  defaultProxy gt   lt  system net gt

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Delete Temp files by run    temp   And Open VS2015 by run as admin   it works for me

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I had a similar issue  trying to run a WCF-based HttpSelfHostServer in Debug under my VisualStudio 2013  I tried every possible direction  turn off firewall  disabling IIS completely to eliminate the possibility localhost port is taken by some other service  etc     Eventually  what  did the trick   solved the problem  was re-running VisualStudio 2013 as Administrator    Amazing

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There is a firewall blocking the connection or the process that is hosting the service is not listening on that port  Or it is listening on a different port

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The issue disappeared for me when I started Fiddler  Was using it on my machine before having the issue  Probably something with Fiddler being proxy

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Had the same problem  it turned out it was the WindowsFirewall blocking connections  Try to disable WindowsFirewall for a while to see if helps and if it is the problem open ports as needed

[c#] No connection could be made because the target machine actively refused it 127.0.0.1

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