Out of the box, command prompt (cmd) in Windows 2003 Server has the auto-complete (tab-complete) feature disabled. To fix the problem open regedit and create following DWORD keys: [HKEY_CURRENT_USER\Software\Microsoft\Command Processor] “CompletionChar”=dword:00000009 “PathCompletionChar”=dword:00000009 Open new command window and your TAB completion is working!