The 'redirect_uri' parameter must be a Login redirect URI in the client app settings

I recommend reviewing the documentation for the .NET Core library if you haven’t already. You can add these missing properties so that you can set a value different from the default, including the CallbackPath (which dictates the redirect_uri) and the PostLogoutRedirectUri: okta-aspnet/aspnetcore-mvc.md at 4c6d815a6b73ad563e847fad541d7b33fdb8762c · okta/okta-aspnet · GitHub