Issue Regarding 401 error by web service

[Rosi]

Hi,

I am having web service with number of methods. We are using integrated
windows authentication for this web service. This service is working fine
with integrated windows authentication.

If I call this service after two minutes of idle time, for first request I
will get 401 error as below. But later subsequent requests are working fine.
This error is coming only, if web service is idle for more than 2 mins. This
behavior is happening only in some of the machines. I am feeling this as
strange behavior. Any ideas would be greatly appreciated.



System.ApplicationException:
URL=http://localhost/CAWSSSTap/VDistributionWebService.asmx

---> System.Net.WebException: The request failed with HTTP status 401:
Unauthorized.

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

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

at
MS.IT.OperationsServices.CommercialService.Service Agents.CommercialService.VLKeyDistributionWebServi ceWse.Ping(String
requestXml) in
D:\PASD_Rosi\Activation\application\CWS\TAP\Commer cialService.ServiceAgents.CommercialService\Web References\VDistributionWebService\Reference.cs:li ne 48

at
MS.IT.OperationsServices.CommercialService.Service Agents.CommercialService.VLKeyDistributionServiceW ebServiceAgent.Ping(String
requestXml) in
D:\PASD_Rosi\Activation\application\CWS\TAP\Commer cialService.ServiceAgents.CommercialService\VLKeyD istributionServiceWebServiceAgent.cs:line 583

--- End of inner exception stack trace ---

at
MS.IT.OperationsServices.CommercialService.Service Agents.CommercialService.VLKeyDistributionServiceW ebServiceAgent.Ping(String
requestXml) in
D:\PASD_Rosi\Activation\application\CWS\TAP\Commer cialService.ServiceAgents.CommercialService\VLKeyD istributionServiceWebServiceAgent.cs:line 591

at
MS.IT.OperationsServices.CommercialService.Test.VL CWSTestClient.Form1.CallServiceAgent()
in
D:\PASD_Rosi\Activation\application\CWS\TAP\Commer cialService.Test.VLCWSTestClient\Form1.cs:line 865

at
MS.IT.OperationsServices.CommercialService.Test.VL CWSTestClient.Form1.btnCallKeyDistributionWebServi ce_Click(Object
sender, EventArgs e) in
D:\PASD_Rosi\Activation\application\CWS\TAP\Commer cialService.Test.VLCWSTestClient\Form1.cs:line 680

Thanks & Regards

Rosi Reddy. R

[Gaurav Vaish \(EduJini.IN\)]

> I am having web service with number of methods. We are using integrated

windows authentication for this web service. This service is working fine
with integrated windows authentication.

401 is Authentication Required error.
You need to first authenticate.

See the following article
http://support.microsoft.com/default...b;en-us;811318
--
Happy Hacking,
Gaurav Vaish
http://www.mastergaurav.org
http://www.edujini.in
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