[KGIII]

If your company, or you, have a relationship with Microsoft, try the Enterprise. They are pretty lenient, though not always rapid in their responses.

[wfunction]

But the point is you need to already have a relationship, right? It seems you can't just say "I'm curious" (or even better, "I want to track down X bug") and expect to get source access, contrary to what was claimed earlier... Enterprise specifically says you need to "Maintain 10,000 Windows seats" which is not something a lone developer would do...

[KGIII]

My only tie was having an MSDN subscription.

[wfunction]

And you got it through the Enterprise license? Through your company or personally? Nothing related to 10,000 Windows seats? That's pretty weird if so since they say you must meet that requirement...

[KGIII]

I didn't misrepresent myself, was logged in, and had no issues. They may have changed it, but that is what I selected. You'll probably have to sign an NDA. Give it a shot.