HTML Sanitizer for .NET

I’m starting a project that will be public facing using asp.net mvc. I know there are about a billion php, python, and ruby html sanitizers out there, but does anyone have some pointers to anything good in .net? What are your experiences with what is out there? I know stackoverflow is a site done in asp.net that allows freeform HTML, what does it use?

ASP.NET Core 404 Error When Published to IIS 7.5

I’m using Visual Studio 2015 to publish my ASP.NET Core app to IIS 7.5. All I’m trying to do is view a normal default.htm page within my wwwroot. Everything works fine when I use VS’s IIS Express, however when I publish is to IIS 7.5 and point the physical path to the wwwroot folder that Visual Studio created on publish, I get nothing but a blank screen (404). What’s weird is when I run the default app.run method from within the Configure method of startup.cs, it works perfectly: