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File Explorer shell protocol must run in protected mode.


Overview

Finding ID Version Rule ID IA Controls Severity
WN12-CC-000091 WN12-CC-000091 WN12-CC-000091_rule Medium
Description
The shell protocol will limit the set of folders applications can open when run in protected mode. Restricting files an application can open to a limited set of folders increases the security of Windows.
STIG Date
Microsoft Windows Server 2012 Domain Controller Security Technical Implementation Guide 2013-07-25

Details

Check Text ( C-WN12-CC-000091_chk )
If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\

Value Name: PreXPSP2ShellProtocolBehavior

Type: REG_DWORD
Value: 0
Fix Text (F-WN12-CC-000091_fix)
Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> File Explorer -> "Turn off shell protocol protected mode" to "Disabled".