You install Windows Vista Service Pack 1 (SP1) on a computer that is running the release version of Windows Vista. When you uninstall Windows Vista SP1, an exclamation point (!) on a yellow field appears next to a WAN Miniport (SSTP) network adapter or next to a WAN Miniport (NDISWANBH) network adapter in Device Manager. When you view the properties of the device, you receive the following error message:

Error code 39.

While searching Microsoft’s MSDN Library (a little light reading to help me sleep), I noticed an entry on the search page that said a new VPN feature called SSTP was being developed for Longhorn, and was to also be included in Vista SP1. I clicked on the link and found that in the main article, the text was different from that on the excerpt from the search page, it only mentioned Longhorn. Someone had changed the article, removing the SP1 reference, but the excerpt hadn’t updated! I had to wonder, was the feature originally planned for SP1 but then pulled? Keep reading →