Windows Authentication for IdentityServer4

Question

I'm having an issue where my client prompts for windows username/password when trying to use windows auth with IdentityServer4. I have tried following documentation, but it hasn't worked out for me at this point.

I'm using IIS Express for both projects.

I have two projects:

Server: Can login using Windows, and see all claims.

Client: Simple MVC app that redirects to Server, then returns to display claims.

When logging in with Windows on the server project, everything works well. When I login on the client, I am always prompted for a Username/Password prompt for windows. Which is not ideal.

Something I've noticed, on the server, in launchSettings.json if I set "anonymousAuthentication": true the client always prompts for the credentials. If I set "anonymousAuthentication": false , the client almost seems work, but I get a 402 error on the .wellknown endpoints.

Answer 1

So I realize what was happening now. I was running my 'client' in an incognito chrome window. I'm not sure why this is the case, but chrome was not performing the Windows challenge automatically while in incognito. Using a regular chrome tab fixed the issue immediately.