ERROR: Unhandled exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Net.HttpListenerException: Access is denied

[srini-morapaka]

I have a issue as below while accessing SSRS reports. I am able access web service, but while accessing portal like http://localhost:8787/Reports throwing error and response in browser is below.

Not Found

HTTP Error 404. The requested resource is not found.

ERROR: Unhandled exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Net.HttpListenerException: Access is denied
at System.Net.HttpListener.AddAllPrefixes()
at System.Net.HttpListener.Start()
at Microsoft.Owin.Host.HttpListener.OwinHttpListener.Start(HttpListener listener, Func2 appFunc, IList1 addresses, IDictionary2 capabilities, Func2 loggerFactory)
at Microsoft.Owin.Host.HttpListener.OwinServerFactory.Create(Func2 app, IDictionary2 properties)
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Microsoft.Owin.Hosting.ServerFactory.ServerFactoryAdapter.Create(IAppBuilder builder)
at Microsoft.Owin.Hosting.Engine.HostingEngine.Start(StartContext context)
at Microsoft.ReportingServices.Portal.WebHost.Services.Impl.WebAppWrapper.Start(StartOptions options, IPortalConfigurationManager rsConfigManager, ILogger logger)
at Microsoft.ReportingServices.Portal.WebHost.Services.Impl.WebAppServiceController.Start()
at Microsoft.ReportingServices.Portal.WebHost.Program.Run()
at Microsoft.ReportingServices.Portal.WebHost.Program.Main(String[] args).

can anyone has solution or suggestion please.

[jtarquino]

I would recommend to post your question in the https://social.msdn.microsoft.com/Forums/sqlserver/en-US/home?forum=sqlreportingservices so the community can help you or contact support.
This project only covers questions about the samples

[srini-morapaka]

Thanks, I resolved the issue by uninstalling and reinstalling the SSRS.