In my shaerpoint 2010 farm, this error below happens twice already in a couple of weeks apart and it happens early Monday around 2 AM. This error shows up in the event log every couple of minutes. Only one of the WFE servers is having an issue. Rebooting the server resolves the issue. Is there permanent resolution to this issue?
Exception information:
Exception type: ConfigurationErrorsException
Exception message: ID0012: Failed to create an instance of 'Microsoft.SharePoint.IdentityModel.SPTokenCache, Microsoft.SharePoint.IdentityModel, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' from configuration.
Thread information:
Thread ID: 9
Is impersonating: False
Stack trace: at Microsoft.IdentityModel.Configuration.CustomTypeElement.Resolve[T](CustomTypeElement customTypeElement, Object[] arguments)
at Microsoft.IdentityModel.Configuration.ServiceConfiguration.LoadHandlers(ServiceElement serviceElement)
at Microsoft.IdentityModel.Configuration.ServiceConfiguration.LoadConfiguration(ServiceElement element)
at Microsoft.IdentityModel.Configuration.ServiceConfiguration..ctor()
at Microsoft.IdentityModel.Web.FederatedAuthentication.get_ServiceConfiguration()
at Microsoft.IdentityModel.Web.HttpModuleBase.Init(HttpApplication context)
at System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers)
at System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context)
at System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context)
at System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext)