Asp Net Core Session Timeout Redirect To Login Page

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As a developer working with ASP.NET Core, I have often come across the need to handle session timeouts and redirect users to the login page. In this article, I will dive deep into how to achieve this functionality and share my personal insights and experiences along the way.

Understanding Session Timeout in ASP.NET Core

Before we can discuss redirecting users to the login page upon session timeout, let’s first understand what session timeout means in ASP.NET Core. Session timeout refers to the duration after which an idle user session will be automatically expired by the server. This is an important security measure to protect user data and ensure the integrity of the application.

In ASP.NET Core, the session timeout can be configured in the Startup.cs file by using the ConfigureSession method. You can set the timeout duration, in minutes, by calling the SetTimeout method of the SessionOptions class.

services.AddSession(options =>
    options.IdleTimeout = TimeSpan.FromMinutes(20);

Redirecting to the Login Page on Session Timeout

Now that we have a basic understanding of session timeout in ASP.NET Core, let’s move on to the main topic – redirecting users to the login page when their session expires.

To achieve this, we can leverage the built-in middleware provided by ASP.NET Core. This middleware allows us to intercept requests and perform custom actions based on the current session state.

app.Use(async (context, next) =>
    if (context.Session.Keys.Count == 0 && context.Request.Path != "/login")

    await next();

In the code snippet above, we first enable session middleware using app.UseSession(). Then, we use the app.Use method to add our custom middleware, which checks if the session has expired (context.Session.Keys.Count == 0) and if the current request is not the login page (context.Request.Path != "/login"). If both conditions are met, we redirect the user to the login page.

It’s worth mentioning that you can customize the redirect URL according to your application’s needs. In the example above, we assume that the login page is located at “/login”. You can replace this with the actual URL of your login page.

Personal Commentary

Implementing session timeout and redirecting to the login page has been a crucial aspect of my ASP.NET Core development journey. It not only ensures the security of user data but also enhances the user experience by guiding them back to the login page when their session expires.

During my projects, I have encountered scenarios where session timeout resulted in users losing unsaved data. To mitigate this, I added client-side JavaScript to warn users before their session expires and prompt them to save their work or renew their session. This not only improved user satisfaction but also reduced frustration caused by unintentional session timeouts.

Remember, session timeout and redirecting to the login page should go hand in hand with other security measures like authentication and authorization to provide a robust and secure application.


In conclusion, handling session timeout and redirecting users to the login page is an essential part of any ASP.NET Core application. By understanding the session timeout configuration and leveraging the built-in middleware, we can ensure that users are redirected to the login page when their session expires.

Remember to consider other factors like prompting users to save their work before session expiry to enhance the user experience. By implementing these techniques, we can create a secure and user-friendly application.

For more detailed information on session timeout and redirecting users to the login page, be sure to refer to the official documentation of ASP.NET Core.