I've created a virtual folder pointing to a network share. I want to use Windows authentication because I want to be able to determine who has access to the file location via an AD group which has full access to the share. Instead of authenticating against the logged on user, it prompts for a username and password. No matter what you enter here it fails with the above error.
When I'm on the webserver and use localhost, it works fine. When I use the server name (FQDN or not) from any machine, it fails with a 401.3 or 401.2. I know 401.3 basically means I don't have access to the resource but I know this isn't true as I can use localhost or go to the share via any other method. 401.2 is an unauthorized invalid authentication header error.
My enabled Windows Authentication providers are NTLM and negotiate but I've played with just about every variation on this just in case. About the only thing I haven't tried is disabling Kernel-mode authentication but this option is greyed out no matter what I do. I would love to try that as well if anyone can figure why it's disabled. Thanks a lot if anyone knows what the problem is. I feel like I've tried everything (but clearly I haven't).
Oh and it's my first venture into IIS 8 so it's absolutely possible I've missed something basic but I've done this in IIS6 and it was childs play there. Any ideas?