I came across a scenario where I needed to shutdown and lock one or more Microsoft Windows PCs remotely. This should work automatically, without VNC / Remote desktop or similar tools, so that it can be scheduled in some way. Applications for this would be:

Shutting down a number of PCs, e.g. in an Internet Cafe or the like
Locking down one or more PCs (for instance to limit access for kids)
Force a shutdown in case some Virus / Worm is detected at the Internet firewall

After considering
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