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Custom Owin is not working after upgrade to Sitefinity 10

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TitleCustom Owin is not working after upgrade to Sitefinity 10
URL Namecustom-owin-is-not-working-after-upgrade-to-sitefinity-10
Article Number000133369
EnvironmentProduct: Sitefinity
Version: 10.x, 11.x
OS: All supported OS versions
Database: All supported Microsoft SQL Server versions
Question/Problem Description
After upgrading to Sitefinity 10, using Owin for customized solutions is no longer working.

Using the following line the in the web.config causes error with the authentication:
<add key="owin:appStartup" value="MyStartupConfig" />
Steps to Reproduce
Clarifying Information
Error Message
Defect Number
Enhancement Number

For Sitefinity 10.2 and above

Official support for plugging-in custom components in the OWIN pipeline is added.

1. Add the following key in the web.config file
<add key="owin:appStartup" value="SitefinityWebApp.Startup" />
2. Implement the custom Startup class
using Owin;
using Telerik.Sitefinity.Owin;
namespace SitefinityWebApp
    public class Startup
        public void Configuration(IAppBuilder app)
            // Register default Sitefinity middlewares in the pipeline
            // Add custom middlewares app.MapSignalR(); for example 

For Sitefinity 10.0 to 10.1 inclusive

In order to use OWIN, the configuration class needs to inherit the SitefinityOwinStartup and override the Configuration method.
The Configuration method requires that base.Configuration(app) be called before any custom code.

1. Add the following key in the web.config file
<add key="owin:appStartup" value="SitefinityWebApp.MyStartup" />

2. Implement the MyStartup class
using Owin;
using Telerik.Sitefinity.Authentication;

namespace SitefinityWebApp
    public class MyStartup : SitefinityOwinStartup
        public override void Configuration(IAppBuilder app)

            //TODO: Add custom logic

NOTE: The above implementation is not fully tested and can lead to issues with the authentication. Make sure to test it extensively before using it in Production environments.
Last Modified Date12/26/2018 2:49 PM
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