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I run blazor app with .net core 7 on iis . then after run it i get error
This page isn’t workinglocalhost is currently unable to handle this request.
HTTP ERROR 500


i make stdout on web.config file to true to log exception error

then i check logs error exception

i found exception below

so How to solve this error please ?

What I have tried:

info: Microsoft.Hosting.Lifetime[0]
      Application started. Press Ctrl+C to shut down.
info: Microsoft.Hosting.Lifetime[0]
      Hosting environment: Production
info: Microsoft.Hosting.Lifetime[0]
      Content root path: C:\inetpub\wwwroot\publish
warn: Microsoft.AspNetCore.HttpsPolicy.HttpsRedirectionMiddleware[3]
      Failed to determine the https port for redirect.
info: System.Net.Http.HttpClient.Default.LogicalHandler[100]
      Start processing HTTP request GET https://localhost:44351/api/ServerNames/GetCountServers
info: System.Net.Http.HttpClient.Default.ClientHandler[100]
      Sending HTTP request GET https://localhost:44351/api/ServerNames/GetCountServers
fail: Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[1]
      An unhandled exception has occurred while executing the request.
      System.Net.Http.HttpRequestException: No connection could be made because the target machine actively refused it. (localhost:44351)
       ---> System.Net.Sockets.SocketException (10061): No connection could be made because the target machine actively refused it.
         at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)
         at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token)
         at System.Net.Sockets.Socket.<ConnectAsync>g__WaitForConnectWithCancellation|281_0(AwaitableSocketAsyncEventArgs saea, ValueTask connectTask, CancellationToken cancellationToken)
         at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, CancellationToken cancellationToken)
         --- End of inner exception stack trace ---
         at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, CancellationToken cancellationToken)
         at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
         at System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
         at System.Net.Http.HttpConnectionPool.AddHttp11ConnectionAsync(QueueItem queueItem)
         at System.Threading.Tasks.TaskCompletionSourceWithCancellation`1.WaitWithCancellationAsync(CancellationToken cancellationToken)
         at System.Net.Http.HttpConnectionPool.HttpConnectionWaiter`1.WaitForConnectionAsync(Boolean async, CancellationToken requestCancellationToken)
         at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
         at System.Net.Http.DiagnosticsHandler.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
         at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
         at Microsoft.Extensions.Http.Logging.LoggingHttpMessageHandler.<SendAsync>g__Core|5_0(HttpRequestMessage request, CancellationToken cancellationToken)
         at Microsoft.Extensions.Http.Logging.LoggingScopeHttpMessageHandler.<SendAsync>g__Core|5_0(HttpRequestMessage request, CancellationToken cancellationToken)
         at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
         at UC.AppRepository.UI.Pages.Dashboard.getcountServers() in D:\04-03-2023\Test\UC.AppRepository.UI\Pages\Dashboard.razor:line 52
         at UC.AppRepository.UI.Pages.Dashboard.OnInitializedAsync() in D:\04-03-2023\Test\UC.AppRepository.UI\Pages\Dashboard.razor:line 33
         at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()
         at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)
         at 
Posted
Updated 4-Mar-23 15:08pm

1 solution

500 errors are almost always because your code crashed.

So start by looking at what is going on with the code at the following locations in the stack trace:
at UC.AppRepository.UI.Pages.Dashboard.getcountServers() in D:\04-03-2023\Test\UC.AppRepository.UI\Pages\Dashboard.razor:line 52
at UC.AppRepository.UI.Pages.Dashboard.OnInitializedAsync() in D:\04-03-2023\Test\UC.AppRepository.UI\Pages\Dashboard.razor:line 33


On top of that, do you have a firewall running on your machine? Is port 44351 open?
 
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