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У меня есть файл cookie для входа в систему, когда пользователи входят в систему, и он сохраняется в течение 5 часов. Файл cookie, с помощью которого пользователь входит в систему, и его логика выглядят следующим образом:

   public void Configuration(IAppBuilder app)
        {
            app.CreatePerOwinContext(ApplicationDbContext.Create);
            app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
            app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);

            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                LoginPath = new PathString("/User/Login"),
                CookieName = "_zlc901285",
                ExpireTimeSpan = TimeSpan.FromHours(5),
                Provider = new CookieAuthenticationProvider
                {
                    OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
                    validateInterval: TimeSpan.FromHours(5),
                    regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
                }
            });
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

            HttpConfiguration config = new HttpConfiguration();
            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );

            app.UseWebApi(config);
            MvcHandler.DisableMvcResponseHeader = true;
        }
  

Теперь, когда пользователь входит в систему, я добавляю файл cookie и аутентифицирую пользователя следующим образом:

 public ActionResult Login(string password)
{
var user = GetUser.GetUserFromDatabase();
if(user.Password==password)
{
 // Now here adding the cookie
 var identity = new ClaimsIdentity(DefaultAuthenticationTypes.ApplicationCookie);
 identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, User.UserId.ToString()));
var claims = new List<Claim>();
var roles = User.UserRoles.ToList();
foreach (UserRoles role in roles)
{
 claims.Add(new Claim(ClaimTypes.Role, role.Roles.RoleName));
}
}
}
  

Как только срок действия этого файла cookie истечет и пройдет отметку в 5 часов (он истекает)… Пользователи начинают получать тайм-ауты на моем веб-сайте, и мне удалось перехватить исключение, которое оказалось таким длинным исключением, что я не могу полностью понять, что его вызывает:

 Message: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 52 - Unable to locate a Local Database Runtime installation. Verify that SQL Server Express is properly installed and that the Local Database Runtime feature is enabled.) StackTrace: 
   at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, DbConnectionPool pool, String accessToken, Boolean applyTransientFaultHandling, SqlAuthenticationProviderManager sqlAuthProviderManager)  
   at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)  
   at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)  
   at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)  
   at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)  
   at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternalamp; connection)  
   at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternalamp; connection)  
   at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternalamp; connection)  
   at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)  
   at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)  
   at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)  
   at System.Data.SqlClient.SqlConnection.Open()  
   at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext](TTarget target, Action`2 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed)  
   at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.Open(DbConnection connection, DbInterceptionContext interceptionContext)  
   at System.Data.Entity.SqlServer.SqlProviderServices.<>c__DisplayClass33.<UsingConnection>b__32()  
   at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass1.<Execute>b__0()  
   at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)  
   at System.Data.Entity.SqlServer.SqlProviderServices.UsingMasterConnection(DbConnection sqlConnection, Action`1 act)  
   at System.Data.Entity.SqlServer.SqlProviderServices.CreateDatabaseFromScript(Nullable`1 commandTimeout, DbConnection sqlConnection, String createDatabaseScript)  
   at System.Data.Entity.SqlServer.SqlProviderServices.DbCreateDatabase(DbConnection connection, Nullable`1 commandTimeout, StoreItemCollection storeItemCollection)  
   at System.Data.Entity.Migrations.Utilities.DatabaseCreator.Create(DbConnection connection)  
   at System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)  
   at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration)  
   at System.Data.Entity.Internal.DatabaseCreator.CreateDatabase(InternalContext internalContext, Func`3 createMigrator, ObjectContext objectContext)  
   at System.Data.Entity.Database.Create(DatabaseExistenceState existenceState)  
   at System.Data.Entity.CreateDatabaseIfNotExists`1.InitializeDatabase(TContext context)  
   at System.Data.Entity.Internal.InternalContext.PerformInitializationAction(Action action)  
   at System.Data.Entity.Internal.InternalContext.PerformDatabaseInitialization()  
   at System.Data.Entity.Internal.RetryAction`1.PerformAction(TInput input)  
   at System.Data.Entity.Internal.LazyInternalContext.InitializeDatabaseAction(Action`1 action)  
   at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType)  
   at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize()  
   at System.Data.Entity.Internal.Linq.InternalSet`1.get_InternalContext()  
   at System.Data.Entity.Internal.Linq.InternalSet`1.FindAsync(CancellationToken cancellationToken, Object[] keyValues)  
   at System.Data.Entity.DbSet`1.FindAsync(CancellationToken cancellationToken, Object[] keyValues)  
   at Microsoft.AspNet.Identity.EntityFramework.UserStore`6.<GetUserAggregateAsync>d__6c.MoveNext()  --- End of stack trace from previous location where exception was thrown ---  
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()  
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)  
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)  
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()  
   at Microsoft.AspNet.Identity.TaskExtensions.CultureAwaiter`1.GetResult()  
   at Microsoft.AspNet.Identity.Owin.SecurityStampValidator.<>c__DisplayClass2`3.<<OnValidateIdentity>b__1>d__4.MoveNext()  --- End of stack trace from previous location where exception was thrown ---  
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()  
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)  
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()  
   at Microsoft.Owin.Security.Cookies.CookieAuthenticationHandler.<AuthenticateCoreAsync>d__2.MoveNext()  --- End of stack trace from previous location where exception was thrown ---  
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()  
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)  
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)  
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()  
   at Microsoft.Owin.Security.Infrastructure.AuthenticationHandler.<BaseInitializeAsync>d__0.MoveNext()  --- End of stack trace from previous location where exception was thrown ---  
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()  
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)  
   at Microsoft.Owin.Security.Infrastructure.AuthenticationMiddleware`1.<Invoke>d__0.MoveNext()  --- End of stack trace from previous location where exception was thrown ---  
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()  
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)  
   at Microsoft.AspNet.Identity.Owin.IdentityFactoryMiddleware`2.<Invoke>d__0.MoveNext()  --- End of stack trace from previous location where exception was thrown ---  
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()  
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)  
   at Microsoft.AspNet.Identity.Owin.IdentityFactoryMiddleware`2.<Invoke>d__0.MoveNext()  --- End of stack trace from previous location where exception was thrown ---  
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()  
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)  
   at Microsoft.AspNet.Identity.Owin.IdentityFactoryMiddleware`2.<Invoke>d__0.MoveNext()  --- End of stack trace from previous location where exception was thrown ---  
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()  
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)  
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()  
   at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContextStage.<RunApp>d__5.MoveNext()  --- End of stack trace from previous location where exception was thrown ---  
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()  
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)  
   at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.<DoFinalWork>d__2.MoveNext()  --- End of stack trace from previous location where exception was thrown ---  
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()  
   at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.StageAsyncResult.End(IAsyncResult ar)  
   at System.Web.HttpApplication.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()  
   at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)  
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Booleanamp; completedSynchronously) // Date: 3/20/2019 7:29:50 AM // Inner exception: System.ComponentModel.Win32Exception (0x80004005): The system cannot find the file specified
  

Я потратил много дней, пытаясь выяснить, что происходит, но безуспешно..

Может ли кто-нибудь помочь мне с этим, я понятия не имею, что происходит? : (