One of my pet peeves with SharePoint has been that whenever I navigate to a SharePoint site on my local domain, it still prompts me for my login credentials. I have to provide the credentials with which I am already logged onto my computer, and then I’m in.
Another issue is that even though I’m logged into SharePoint when I try to open a document for editing, I am again prompted for my credentials. What happened to the idea of a single sign on?
Well, I found an article that helps solve this problem. It solves the initial site login problem, but also addresses the problem of being prompted for login each time I need to edit a document too.
The article also refers to a hotfix that can be applied, and additional registry entries that may need to be made. That KB article is found here.
This fixed my problems, hope it fixes yours 🙂