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Programmatically lock a Windows PC
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Question:How can I programmatically lock a PC? My situation is that I use VNC to access a remote machine, when I'm done, I want to lock that PC again. I used to have VNC send Control+Alt+Delete via its system menu and then I'd click on 'Lock Workstation'. With Windows XP this doesn't work anymore and VNC cannot send the new shortcut Windows-Key + L.
Answer:Put a shortcut to this command on your remote desktop:
rundll32.exe user32.dll, LockWorkStation
Another good tools is shutdown.exe provided by Microsoft since Windows 2000. Read the documentation here: http://support.microsoft.com/?kbid=317371