I am Trying to access Active Directory data through graph API. i am getting the following error on running the application.
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.TypeLoadException: Inheritance security rules violated by type: 'System.Net.Http.WebRequestHandler'. Derived types must either match the security accessibility of the base type or be less accessible."
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:
[TypeLoadException: Inheritance security rules violated by type: 'System.Net.Http.WebRequestHandler'. Derived types must either match the security accessibility of the base type or be less accessible.]
Microsoft.Owin.Security.OpenIdConnect.OpenIdConnectAuthenticationMiddleware.ResolveHttpMessageHandler(OpenIdConnectAuthenticationOptions options) +0
Microsoft.Owin.Security.OpenIdConnect.OpenIdConnectAuthenticationMiddleware..ctor(OwinMiddleware next, IAppBuilder app, OpenIdConnectAuthenticationOptions options) +996
lambda_method(Closure , OwinMiddleware , IAppBuilder , OpenIdConnectAuthenticationOptions ) +54
[TargetInvocationException: Exception has been thrown by the target of an invocation.]
System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) +0
System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments) +92
System.Delegate.DynamicInvokeImpl(Object[] args) +117
System.Delegate.DynamicInvoke(Object[] args) +12
Microsoft.Owin.Builder.AppBuilder.BuildInternal(Type signature) +236
Microsoft.Owin.Builder.AppBuilder.Build(Type returnType) +21
Microsoft.Owin.Host.SystemWeb.OwinAppContext.Initialize(Action`1 startup) +565
Microsoft.Owin.Host.SystemWeb.OwinBuilder.Build(Action`1 startup) +58
Microsoft.Owin.Host.SystemWeb.OwinHttpModule.InitializeBlueprint() +95
System.Threading.LazyInitializer.EnsureInitializedCore(T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory) +115
System.Threading.LazyInitializer.EnsureInitialized(T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory) +72
Microsoft.Owin.Host.SystemWeb.OwinHttpModule.Init(HttpApplication context) +96
System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +523
System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +176
System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +364
System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +303
[HttpException (0x80004005): Exception has been thrown by the target of an invocation.]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +770
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +95
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +195
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.1069.1
As i am a beginner i am struck with the error. Could any one please let me know what needs to be done to overcome this error
It seems the bug has now been closed on GitHub (https://github.com/dotnet/corefx/issues/11100) and a new version of System.Net.Http
has been released.
I was able to upgrade System.Net.Http
to version 4.3.1
with NuGet and that solved the issue.