I ran Windows update using WSUS last weekend. Monday morning my client had no network connection. Turns out the NDIS.SYS file was missing in the DRIVERS folder and also it's associated key in the registry. My conclusion is that one of the Windows updates caused it.My OS is XP SP3. Our server runs SBS2003.I'm not seeing a way to attach a file, else I'd give you the list of updates... there are 100 of them.1 person needs an answerI do too