If you ever try to stop sharing ADMIN$ (C:\Windows) you find yourself seeing that this same share is available after restart. To permanently disable administrative [gs share]s:
You need to edit Registry...
For NT 4.0/W2K/Windows Server 2003
HKLM\SYSTEM\CurrentControlSet\Services\LanManServer\Parameters
For NT 4.0 Workstation/W2K Pro/XP Pro/Seven/8
HKLM\SYSTEM\CurrentControlSet\Services\LanManServer\Parameters
If you can't find the value in the registry under the exact location, value must be created:
Right click in the right pane of the window > New > DWORD Value and leave the default value, so 0 (Zero).
Some applications depend on the presence of these shares. To re-enable the shares simply change value to 1.
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How to disable Administrative Shares on Windows (XP – Vista – Seven – 8 – Server) – http://heelpbook.altervista.org/?p=36009 – 27/02/2013 – 13:05 – HeelpBook – Visit http://www.heelpbook.net OR http://mobile.heelpbook.net on your tablet! #heelpbook @heelpbook