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How to Deploy ASP.NET Core to IIS


IIS configuration


Windows Server operating systems

Enable the Web Server (IIS) server role and establish role services.

  1. Use the Add Roles and Features wizard from the Manage menu or the link in Server Manager. On the Server Roles step, check the box for Web Server (IIS).

    The Web Server IIS role is selected in the Select server roles step.

  2. After the Features step, the Role services step loads for Web Server (IIS). Select the IIS role services desired or accept the default role services provided.

    The default role services are selected in the Select role services step.

    Windows Authentication (Optional)
    To enable Windows Authentication, expand the following nodes: Web Server > Security. Select the Windows Authentication feature. For more information.

    WebSockets (Optional)
    WebSockets is supported with ASP.NET Core 1.1 or later. To enable WebSockets, expand the following nodes: Web Server > Application Development. Select the WebSocket Protocol feature. For more information.

  3. Proceed through the Confirmation step to install the web server role and services. A server/IIS restart isn't required after installing the Web Server (IIS) role.

Windows desktop operating systems

Enable the IIS Management Console and World Wide Web Services.

  1. Navigate to Control Panel > Programs > Programs and Features > Turn Windows features on or off (left side of the screen).

  2. Open the Internet Information Services node. Open the Web Management Tools node.

  3. Check the box for IIS Management Console.

  4. Check the box for World Wide Web Services.

  5. Accept the default features for World Wide Web Services or customize the IIS features.

    Windows Authentication (Optional)
    To enable Windows Authentication, expand the following nodes: World Wide Web Services > Security. Select the Windows Authentication feature. For more information, see Windows Authentication <windowsAuthentication> and Configure Windows authentication.

    WebSockets (Optional)
    WebSockets is supported with ASP.NET Core 1.1 or later. To enable WebSockets, expand the following nodes: World Wide Web Services > Application Development Features. Select the WebSocket Protocol feature. For more information, see WebSockets.

  6. If the IIS installation requires a restart, restart the system.

IIS Management Console and World Wide Web Services are selected in Windows Features.



Install the .NET Core Hosting Bundle


Install the .NET Core Hosting Bundle on the hosting system. The bundle installs the .NET Core Runtime, .NET Core Library, and the ASP.NET Core Module. The module allows ASP.NET Core apps to run behind IIS.

If the Hosting Bundle is installed before IIS, the bundle installation must be repaired. Run the Hosting Bundle installer again after installing IIS.If the Hosting Bundle is installed after installing the 64-bit (x64) version of .NET Core, SDKs might appear to be missing (No .NET Core SDKs were detected). To resolve the problem, see Troubleshoot and debug ASP.NET Core projects.

Direct download (current version)

Download the installer using the following link:

Current .NET Core Hosting Bundle installer (direct download)

Earlier versions of the installer

To obtain an earlier version of the installer:

  1. Navigate to the Download .NET Core page.
  2. Select the desired .NET Core version.
  3. In the Run apps - Runtime column, find the row of the .NET Core runtime version desired.
  4. Download the installer using the Hosting Bundle link.

Install Web Deploy when publishing with Visual Studio


When deploying apps to servers with Web Deploy, install the latest version of Web Deploy on the server. To install Web Deploy, use the Web Platform Installer (WebPI) or obtain an installer directly from the Microsoft Download Center. The preferred method is to use WebPI. WebPI offers a standalone setup and a configuration for hosting providers.


Create the IIS site

  1. On the hosting system, create a folder to contain the app's published folders and files. In a following step, the folder's path is provided to IIS as the physical path to the app. For more information on an app's deployment folder and file layout, see ASP.NET Core directory structure.

  2. In IIS Manager, open the server's node in the Connections panel. Right-click the Sites folder. Select Add Website from the contextual menu.

  3. Provide a Site name and set the Physical path to the app's deployment folder. Provide the Binding configuration and create the website by selecting OK:













  1. Under the server's node, select Application Pools.

  2. Right-click the site's app pool and select Basic Settings from the contextual menu.

  3. In the Edit Application Pool window, set the .NET CLR version to No Managed Code:

    Set No Managed Code for the .NET CLR version.

    ASP.NET Core runs in a separate process and manages the runtime. ASP.NET Core doesn't rely on loading the desktop CLR (.NET CLR)—the Core Common Language Runtime (CoreCLR) for .NET Core is booted to host the app in the worker process. Setting the .NET CLR version to No Managed Code is optional but recommended.

  4. ASP.NET Core 2.2 or later: For a 64-bit (x64) self-contained deployment that uses the in-process hosting model, disable the app pool for 32-bit (x86) processes.

    In the Actions sidebar of IIS Manager > Application Pools, select Set Application Pool Defaults or Advanced Settings. Locate Enable 32-Bit Applications and set the value to False. This setting doesn't affect apps deployed for out-of-process hosting.

  5. Confirm the process model identity has the proper permissions.

    If the default identity of the app pool (Process Model > Identity) is changed from ApplicationPoolIdentity to another identity, verify that the new identity has the required permissions to access the app's folder, database, and other required resources. For example, the app pool requires read and write access to folders where the app reads and writes files.

Sundar  Neupane

Sundar Neupane

I like working on projects with a team that cares about creating beautiful and usable interfaces.

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