Not exactly an explanation ( ): http://grc.com/faq-shieldsup.htm Quoting Steve Gibson: [hr] Q: What happened to the free NoShare and LetShare utilities? They were on this site for a while, then they disappeared and the versions I had have now "expired". They worked great, so why are they gone? A: NoShare and LetShare were terrific solutions for quickly, easily, and reversibly disabling and enabling NetBIOS resource sharing. But they required more technical support than we were able to provide. With this site's traffic being as high as it is, so many thousands of copies were being downloaded every day that even a low percentage of people who wanted to know "how to install it" (you don't) or how to remove it (just delete it) or where it went in their computer after they downloaded it (how should we know?) that the responsibility of supporting a "code solution" was too much. Also, many people don't like running random executable programs (especially people who don't know me and the way I author programs.) So, when I figured out how to use network binding to achieve the same results I joyfully discontinued offering NoShare and LetShare . . . and the technical support questions died down almost immediately. If you really want to use them, those links above will get you new, non-expired, versions. But we will not answer eMail about them . . . okay?