Server Error in '/holtaalen' Application.

The remote name could not be resolved: 'adfs.holtalenskole.no'

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 remote name could not be resolved: 'adfs.holtalenskole.no'

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 remote name could not be resolved: 'adfs.holtalenskole.no']
   System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult) +638
   System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar) +65

[HttpRequestException: An error occurred while sending the request.]
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.IdentityModel.Protocols.<GetDocumentAsync>d__8.MoveNext() in C:\agent2\_work\56\s\src\Microsoft.IdentityModel.Protocols\Configuration\HttpDocumentRetriever.cs:89

[IOException: IDX20804: Unable to retrieve document from: 'https://adfs.holtalenskole.no/federationmetadata/2007-06/FederationMetadata.xml'.]
   Microsoft.IdentityModel.Protocols.<GetDocumentAsync>d__8.MoveNext() in C:\agent2\_work\56\s\src\Microsoft.IdentityModel.Protocols\Configuration\HttpDocumentRetriever.cs:96
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.IdentityModel.Protocols.WsFederation.<GetAsync>d__4.MoveNext() in C:\agent2\_work\56\s\src\Microsoft.IdentityModel.Protocols.WsFederation\Configuration\WsFederationConfigurationRetriever.cs:106
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task) +26
   Microsoft.IdentityModel.Protocols.<GetConfigurationAsync>d__24.MoveNext() in C:\agent2\_work\56\s\src\Microsoft.IdentityModel.Protocols\Configuration\ConfigurationManager.cs:194

[InvalidOperationException: IDX20803: Unable to obtain configuration from: 'https://adfs.holtalenskole.no/federationmetadata/2007-06/FederationMetadata.xml'.]
   Microsoft.IdentityModel.Protocols.<GetConfigurationAsync>d__24.MoveNext() in C:\agent2\_work\56\s\src\Microsoft.IdentityModel.Protocols\Configuration\ConfigurationManager.cs:202
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.Owin.Security.WsFederation.<ApplyResponseChallengeAsync>d__5.MoveNext() +327
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.Owin.Security.Infrastructure.<ApplyResponseCoreAsync>d__40.MoveNext() +272
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.Owin.Security.Infrastructure.<ApplyResponseAsync>d__39.MoveNext() +271
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.Owin.Security.Infrastructure.<TeardownAsync>d__34.MoveNext() +158
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.Owin.Security.Infrastructure.<Invoke>d__5.MoveNext() +659
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.<RunApp>d__7.MoveNext() +179
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.Owin.Security.Infrastructure.<Invoke>d__5.MoveNext() +519
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.<RunApp>d__7.MoveNext() +179
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.<DoFinalWork>d__12.MoveNext() +180
   Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.StageAsyncResult.End(IAsyncResult ar) +69
   Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.EndFinalWork(IAsyncResult ar) +64
   System.Web.<>c__DisplayClass11_0.<InvokeEndHandler>b__0() +34
   System.Web.StepInvoker.Invoke(Action executionStep) +107
   System.Web.<>c__DisplayClass4_0.<Invoke>b__0() +23
   Microsoft.AspNet.TelemetryCorrelation.TelemetryCorrelationHttpModule.OnExecuteRequestStep(HttpContextBase context, Action step) +64
   System.Web.<>c__DisplayClass284_0.<OnExecuteRequestStep>b__0(Action nextStepAction) +56
   System.Web.StepInvoker.Invoke(Action executionStep) +91
   System.Web.<>c__DisplayClass4_0.<Invoke>b__0() +23
   Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule.OnExecuteRequestStep(HttpContextBase context, Action step) +124
   System.Web.<>c__DisplayClass284_0.<OnExecuteRequestStep>b__0(Action nextStepAction) +56
   System.Web.StepInvoker.Invoke(Action executionStep) +91
   System.Web.AsyncEventExecutionStep.InvokeEndHandler(IAsyncResult ar) +123
   System.Web.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult ar) +9931761


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0