SSRS The request failed with HTTP status 401: Unauthorized

SSRS  “The request failed with HTTP status 401: Unauthorized”

SOLVED

(Advanced Settings) ApplicationPool à  (Process Model)   NetworkService à Identity à NetworkService

Server Error in '/' Application.

---

The request failed with HTTP status 401: Unauthorized.

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.WebException: The request failed with HTTP status 401: Unauthorized.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[WebException: The request failed with HTTP status 401: Unauthorized.]    Microsoft.Reporting.WebForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.GetSecureMethods() +192    Microsoft.Reporting.WebForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.IsSecureMethod(String methodname) +51    Microsoft.Reporting.WebForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.SetConnectionSSLForMethod(String methodname) +12    Microsoft.Reporting.WebForms.Internal.Soap.ReportingServices2005.Execution.ProxyMethodInvocation.Execute(RSExecutionConnection connection, ProxyMethod`1 initialMethod, ProxyMethod`1 retryMethod) +417    Microsoft.Reporting.WebForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.LoadReport(String Report, String HistoryID) +180    Microsoft.Reporting.WebForms.ServerReport.EnsureExecutionSession() +79    Microsoft.Reporting.WebForms.ServerReport.GetParameters() +49       YnaDialogBasePage.Page_Load(Object sender, EventArgs e) +130    System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51    System.Web.UI.Control.OnLoad(EventArgs e) +92    System.Web.UI.Control.LoadRecursive() +54    System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +772

---

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.17929