I am getting this error after I installed Microsoft.Owin.*. Target .Net Framework:4.5.2. Web Activator: 2.2.0 I have the same setup in another project and that seems to work fine. Please help me debug or fix this.
Have I have done so far:-
Full Error Details :-
Parameter count mismatch. 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.
Stack Trace:
[TargetParameterCountException: Parameter count mismatch.]
System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(Object obj,
BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo
culture) +11403690
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags
invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +54
WebActivatorEx.BaseActivationMethodAttribute.InvokeMethod() +73
WebActivatorEx.ActivationManager.RunActivationMethods(Boolean designerMode)
+637
WebActivatorEx.ActivationManager.Run() +103
[InvalidOperationException: The pre-application start initialization method
Run on type WebActivatorEx.ActivationManager threw an exception with the
following error message: Parameter count mismatch..]
Here's the package.config :-
<package id="EntityFramework" version="6.1.3" targetFramework="net452" />
<package id="log4net" version="2.0.8" targetFramework="net452" />
<package id="Microsoft.AspNet.Razor" version="3.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.Client" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.Owin" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebHelpers" version="3.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebPages" version="3.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebPages.Data" version="3.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebPages.WebData" version="3.2.3" targetFramework="net452" />
<package id="Microsoft.Owin" version="3.1.0" targetFramework="net452" />
<package id="Microsoft.Owin.Host.SystemWeb" version="3.1.0" targetFramework="net452" />
<package id="Microsoft.Owin.Security" version="3.1.0" targetFramework="net452" />
<package id="Microsoft.Owin.Security.OAuth" version="3.1.0" targetFramework="net452" />
<package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net452" />
<package id="Newtonsoft.Json" version="10.0.2" targetFramework="net452" />
<package id="Owin" version="1.0" targetFramework="net452" />
<package id="Swashbuckle" version="5.5.3" targetFramework="net452" />
<package id="Swashbuckle.Core" version="5.5.3" targetFramework="net452" />
<package id="WebActivatorEx" version="2.0" targetFramework="net452" />
I found the issue. there was another PreApplicationStartMethod in swagger that was causing the issue. After I removed that line things started working.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With