MVC Core 2.0 Demo: Logout causes 400 error

[david.williams1]

I am using the Okta okta-aspnetcore-mvc-example. The application runs fine and correctly authenticates against Okta. However logout always returns the 400 error:

The ‘post_logout_redirect_uri’ parameter must be an absolute URI that is whitelisted in the client app settings.
Likely I have missed a configuration setting, but I am unable to find it. I have done the following

• Application: Set the client, authority, client secret values
• Application runs on http://localhost:60611/
• Okta: I set the login redirect, logout redirect, and Initiate login uri to http://localhost:60611/authorization-code/callback
• Okta: Set application grant types to “Authorization Code” (default).
• Added http://localhost:60611/ to Trusted Origins (I not sure this is needed)

What else do I need to configure this correctly?

[paul.leblond]

Try setting your logout redirect to

http://localhost:60611/signout-callback-oidc

instead of

http://localhost:60611/authorization-code/callback

[david.williams1]

Excellent, that worked.