Hive: HKEY_LOCAL_MACHINE
Key: SYSTEM\CurrentControlSet\Control\Session
Manager\Subsystems
Under some OSs the string with have both "os/2" and "posix" strings. XP generally just has "posix". In any case, clear the value.
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- Disable OS/2 and/or Posix subsystems
- Restriction
- Registry Tips
- Windows 2000
- Windows Server 2008/2003/2000/XP/NT Administrator Knowledge Base
- Section(s): Disable , Disable - Hide , Restriction
- Published on Apr 20, 2004.
- Last Modified on Apr 20, 2004.
- Last Modified by Wayne Maples.
- Rated 5 out of 5 based on 1 votes.
It is a good security policy to disable optional, unused sub-systems Microsoft
included with Windows - NT, W2K, & XP. To disable the obsolete and insecure
posix and os/2 subsystems by clearing the multistring value named "Optional" in the Registry entry:
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