Server Error in '/' Application.

The specified network name is no longer available

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.ComponentModel.Win32Exception: The specified network name is no longer available

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:


[Win32Exception (0x80004005): The specified network name is no longer available]

[SqlException (0x80131904): A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: TCP Provider, error: 0 - The specified network name is no longer available.)]
   Enghelab.ClassLibrary.DAL.Assistant.ExecuteDataTable(SqlCommand comd) in f:\MVC\Taekwondo\Backup\14001213\Site\Taekwondo\ClassLibrary\DAL\_Assistant.cs:56
   Enghelab.ClassLibrary.BLL.Config.GetValue(String ConfigKey, String DefaultValue, String Description) in f:\MVC\Taekwondo\Backup\14001213\Site\Taekwondo\ClassLibrary\BLL\Config.cs:21
   MvcApp.MvcApplication.Application_BeginRequest() in f:\MVC\Taekwondo\Backup\14001213\Site\Taekwondo\MvcApp\Global.asax.cs:61

[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) +260
   System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +142
   System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) +34
   System.Web.Util.ArglessEventHandlerProxy.Callback(Object sender, EventArgs e) +71
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +139
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +88


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4087.0