REMOVE AND PREVENT ACCESS TO SHUTDOWN COMMAND

You can prevent and remove the shutdown command in xp by enabling it in group policy. To do so, follow the steps below

Start->Run->Type"gpedit.msc"

In the "user configuration" select Administrative templates->start menu and taskbar, in the right side of the screen you will find lots of options, in that select "Remove and prevent access to shutdown command". Double click it and select enable. Click ok.

There are lots of other options which you can enable there.

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