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Intermite Issues authenticating with SSO WSFederation

Last Modified: 2020-06-17
This issue is perplexing us. It is impacting production.  We appreciate your prompt response.

When users request the web application, the system redirects to the login screen in the IDP, when it works after successful login the user is back into the system, when it doesn’t work we get into a loop going back and forth between the web page and the IDP.

We had this issue in development and could not figure out the root cause and ended up moving the application to another server and the issue went away.  We have been in production for several weeks now and the issue has returned. We have not made any changes since go live.
From I can see I think it is not setting the ASP.net Authentication cookie after coming back from SSO redirect.
We have a MVC ASP.net 4.6.2 Web Application created in Visual Studio 2019. With just out of the box configuration based on the template in visual studio.
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