go.microsoft.com: what is it exactly, and how do I stop a workstation from trying to access this site?

Hello,

I'm hoping someone can point me in the right direction with this... We have many workstations out in our production areas that are denied access to the Internet, per our business policy. To enforce this policy we utilize a web-filtering software, which we pay for on a per-license basis. The problem is, these workstations are somehow attempting to access this "go.microsoft.com" site automatically, and although the workstations are blocked by the web-filtering software, it still counts as an attempt against the system and therefore uses up a license seat (which are limited to begin with).

This is the only site these pc's are attempting to access, and I've been trying to find a way to eliminate this program--or whatever it is--from the machines so that they're not burning up web-filtering licenses with these useless attempts.

What is go.microsoft.com used for that it seems to be an automated process, and how do I successfully disable it? I've already added this to the restricted sites under Internet Explorer, in addition to searching for and removing any unecessary "bonus" software that came pre-installed on these machines. No luck. Any time I Google "go.microsoft.com", it comes back with a bunch of random discussions that have little, if anything, to do with my current problem.

Thanks in advance, and sorry for the long-winded post.