ASP.NET MVC WEB API Impersonation Thread issue

ASP.NET MVC WEB API Impersonation Thread issuehttp://developers.de/blogs/holger_vetter/archive/2016/09/20/asp-net-mvc-web-api-impersonation-thread-issue.aspxIn an ASP.NET MVC WEB API application I implemented Windows Authentication with custom roles by using an implementation of IIdentity. In my setup the user gets authenticated by NTLM, then we have the user name. Now there is a part in the OWIN PipelineenCommunityServer 2008 SP1 (Build: 30619.63)