The Windows update log file can be found at %systemroot%\WindowsUpdate.log and contains all the information related to the updating of your computer. This log file will also contain any pertinent information for those of you connecting to a SUS or WSUS server for updates. Starting here should lead you down the right path towards troubleshooting your Windows update problems.
Chris Sanders is the network administrator for one of the largest public school systems in the state of Kentucky. Chris's specialties include general network administration, windows server 2003, wireless networking, and security. You can view Chris' personal website at www.chrissanders.org.