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37 lines
1.7 KiB
Markdown
37 lines
1.7 KiB
Markdown
---
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title: Understanding AppLocker rule exceptions (Windows 10)
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description: This topic describes the result of applying AppLocker rule exceptions to rule collections.
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ms.assetid: e6bb349f-ee60-4c8d-91cd-6442f2d0eb9c
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ms.reviewer:
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ms.author: macapara
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ms.prod: w10
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ms.mktglfcycl: deploy
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ms.sitesec: library
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ms.pagetype: security
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ms.localizationpriority: medium
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author: mjcaparas
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manager: dansimp
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audience: ITPro
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ms.collection: M365-security-compliance
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ms.topic: conceptual
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ms.date: 09/21/2017
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---
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# Understanding AppLocker rule exceptions
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**Applies to**
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- Windows 10
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- Windows Server
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This topic describes the result of applying AppLocker rule exceptions to rule collections.
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You can apply AppLocker rules to individual users or a group of users. If you apply a rule to a group of users, all users in that group are affected by that rule. If you need to allow a subset of a user group to use an app, you can create a special rule for that subset.
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For example, the rule "Allow Everyone to run Windows except Registry Editor" allows Everyone to run Windows binaries, but does not allow anyone to run Registry Editor (by adding %WINDIR%\regedit.exe as a Path Exception of the rule).
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The effect of this rule would prevent users such as Helpdesk personnel from running the Registry Editor, a program that is necessary for their support tasks.
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To resolve this problem, create a second rule that applies to the Helpdesk user group: "Allow Helpdesk to run Registry Editor" and add %WINDIR%\regedit.exe as an allowed path. If you create a deny rule that does not allow any users to run Registry Editor, the deny rule will override the second rule that allows the Helpdesk user group to run Registry Editor.
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## Related topics
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- [How AppLocker works](how-applocker-works-techref.md)
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