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DLL Rules in AppLocker

Updated: June 21, 2012

Applies To: Windows 7, Windows 8, Windows Server 2008 R2, Windows Server 2012

This topic describes the file formats and available default rules for the DLL rule collection.

AppLocker defines DLL rules to include only the following file formats:

  • .dll

  • .ocx

The following table lists the default rules that are available for the DLL rule collection.

 

Purpose Name User Rule condition type

Allows members of the local Administrators group to run all DLLs

(Default Rule) All DLLs

BUILTIN\Administrators

Path: *

Allow all users to run DLLs in the Windows folder

(Default Rule) Microsoft Windows DLLs

Everyone

Path: %windir%\*

Allow all users to run DLLs in the Program Files folder

(Default Rule) All DLLs located in the Program Files folder

Everyone

Path: %programfiles%\*

ImportantImportant
If you use DLL rules, a DLL allow rule has to be created for each DLL that is used by all of the allowed applications.

CautionCaution
When DLL rules are used, AppLocker must check each DLL that an application loads. Therefore, users may experience a reduction in performance if DLL rules are used.

See Also

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