Applocker

Skip to main content This browser is no longer supported. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. What Is AppLocker? Article10/01/2024 Applies to: ✅ Windows 11, ✅ Windows 10, ✅ Windows Server 2025, ✅ Windows Server 2022, ✅ Windows Server 2019, ✅ Windows Server 2016 In this article -->This article for the IT professional describes what AppLocker is.Windows includes two technologies that can be used for application control, depending on your organization's specific scenarios and requirements: App Control for Business and AppLocker. For information to help you choose when to use App Control or AppLocker, see App Control and AppLocker overview.AppLocker helps you create rules to allow or deny apps from running based on information about the apps' files. You can also use AppLocker to control which users or groups can run those apps.Using AppLocker, you can:Control the following types of apps and files: executable files (.exe and .com), scripts (.js, .ps1, .vbs, .cmd, and .bat), Windows Installer files (.mst, .msi and .msp), and DLL files (.dll and .ocx), and packaged apps and packaged app installers (appx).Define rules based on file attributes derived from the digital signature, including the publisher, product name, file name, and file version. For example, you can create rules based on the publisher attribute that is persistent through updates, or you can create rules for a specific version of a file.Assign a rule to a security group or an individual user.Create exceptions to rules. For example, you can create a rule that allows all Windows processes to run except Registry Editor (Regedit.exe).Use audit-only mode to deploy the policy and understand its effect before enforcing it.Import and export rules. The import and export affects the entire policy. For example, if you export a policy, all of the rules from all of the rule collections are exported, including the enforcement settings for the rule collections. If you import a policy, all criteria in the existing policy are overwritten.Streamline creating and managing AppLocker rules by using Windows PowerShell cmdlets.For information about the application control scenarios that AppLocker addresses, see AppLocker policy use scenarios.Related articlesAppLocker technical reference --> Feedback Additional resources In this article

Encodo Posts: 1 Joined: Mon Jan 14, 2019 2:49 pm Location: Switzerland Enigma Virtual Box and AppLocker Problem Hi,We use Enigma Virtual Box for an Electron application and everything worked fine until a client started to harden their system using Microsoft AppLocker. Basically AppLocker is an application that allows whitelisting the execution within certain paths for certain users/user groups. When AppLocker is configured to only allow the execution of applications within certain paths the Electron application displays the error Cannot load library node.dllin a dialog box (even though the path where the Electron application is stored is on the whitelist). When the user presses "Ok" the application is terminated.As far as I understand, Enigma Virtual Box presents all the packaged files as "virtual files" to the application and doesn't unpack the files into the file system. So my assumption is that AppLocker blocks the application from loading the packed DLLs from the location where they are presented to the application (because this location is not on the AppLocker whitelist).Has anybody else faced this or similar problems? Does anybody know under which paths Enigma Virtual Box presents the packaged files to the application?Any help would be appreciated!Thanks in advanceRemo Enigma Site Admin Posts: 3035 Joined: Wed Aug 20, 2008 2:24 pm Re: Enigma Virtual Box and AppLocker Problem Post by Enigma » Wed Jan 16, 2019 9:51 am Hi Remo,Enigma Virtual Box does not extract files on the disk, it does the virtualization in memory only, thus it is very strange that such error appear there. Probably, AppLocker works as intermediate level between application and protection and does not allow application's call to reach the protection...As an idea, could you try to enable running from TEMP folder? EVB uses temporary files for working process, maybe this helps.

Avoid using this value in your AppLocker policies. Instead, you should choose explicitly between the remaining two options.Enforce rulesRules are enforced. When a user runs an app affected by an AppLocker rule, the app binary is blocked. Info about the binary is added to the AppLocker event log.Audit onlyRules are audited but not enforced. When a user runs an app affected by an AppLocker rule, the app binary is allowed to run. However, the info about the binary is added to the AppLocker event log. The Audit-only enforcement mode helps you identify the apps affected by the policy before the policy is enforced.When AppLocker policies are merged, the rules from all the policies are added to the effective policy and a single enforcement mode is selected for each rule collection. If multiple AppLocker policies are applied to a device through Group Policy, the enforcement mode setting applied is selected based on Group Policy precedence. If you apply an AppLocker policy locally using the Set-AppLockerPolicy PowerShell cmdlet with the -merge option, the more restrictive enforcement mode is chosen between the existing local policy and the policy being merged.Rule conditionsRule conditions are criteria that help AppLocker identify the apps to which the rule applies. The three primary rule conditions are publisher, path, and file hash.Publisher: Identifies an app based on its digital signaturePath: Identifies an app by its location in the file system of the computer or on the networkFile hash: Represents the system computed cryptographic Authenticode hash of the identified filePublisherThis condition identifies an app based on its digital signature and extended attributes when available. The digital signature contains info about the company that created the app (the publisher). Executable files, dlls, Windows installers, packaged apps and packaged app installers also include extended attributes, which are obtained from the binary resource. These attributes often include the name of the product, the original file name, and the version number of the file as defined by the publisher. If there are packaged apps and packaged app installers, these extended attributes contain the name and the version of the app package.NoteRules created in the

Skip to main content This browser is no longer supported. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Export an AppLocker policy to an XML file Article10/01/2024 Applies to: ✅ Windows 11, ✅ Windows 10, ✅ Windows Server 2025, ✅ Windows Server 2022, ✅ Windows Server 2019, ✅ Windows Server 2016 In this article -->This article for IT professionals describes the steps to export an AppLocker policy to an XML file for review or testing.Membership in the local Administrators group, or equivalent, is the minimum required to complete this procedure.To export an AppLocker policy to an XML fileFrom the AppLocker console, right-click AppLocker, and then select Export Policy.Browse to the location where you want to save the XML file.In the File name box, type a file name for the XML file, and then select Save. --> Feedback Additional resources In this article

Skip to main content This browser is no longer supported. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. What Is AppLocker? Article 08/31/2016 In this article -->Applies To: Windows 7, Windows 8.1, Windows Server 2008 R2, Windows Server 2012 R2, Windows Server 2012, Windows 8This topic for the IT professional describes what AppLocker is and how its features differ from Software Restriction Policies.AppLocker was introduced in Windows Server 2008 R2 and Windows 7 that advances the application control features and functionality of Software Restriction Policies. AppLocker contains new capabilities and extensions that allow you to create rules to allow or deny applications from running based on unique identities of files and to specify which users or groups can run those applications.Using AppLocker, you can:Control the following types of applications: executable files (.exe and .com), scripts (.js, .ps1, .vbs, .cmd, and .bat), Windows Installer files (.mst, .msi and .msp), and DLL files (.dll and .ocx), and packaged apps and packaged app installers (appx).Define rules based on file attributes derived from the digital signature, including the publisher, product name, file name, and file version. For example, you can create rules based on the publisher attribute that is persistent through updates, or you can create rules for a specific version of a file.Assign a rule to a security group or an individual user.Create exceptions to rules. For example, you can create a rule that allows all Windows processes to run except Registry Editor (Regedit.exe).Use audit-only mode to deploy the policy and understand its impact before enforcing it.Import and export rules. The import and export affects the entire policy. For example, if you export a policy, all of the rules from all of the rule collections are exported, including the enforcement settings for the rule collections. If you import a policy, all criteria in the existing policy are overwritten.Streamline creating and managing AppLocker rules by using Windows PowerShell cmdlets.AppLocker helps reduce administrative overhead and helps reduce the organization's cost of managing computing resources by decreasing the number of help desk calls that result from users running unapproved applications.For information about the application control scenarios that AppLocker addresses, see AppLocker Policy Use Scenarios.What features are different between Software Restriction Policies and AppLocker?Feature differencesThe following table compares AppLocker to Software Restriction Policies.FeatureSoftware Restriction PoliciesAppLockerRule scopeAll usersSpecific user or groupRule conditions providedFile hash, path, certificate, registry path, and Internet

Generates allow rules only.Other considerationsBy default, AppLocker rules don't allow users to open or run any files that aren't allowed. Administrators should maintain an up-to-date list of allowed applications.There are two types of AppLocker conditions that don't persist following an update of an app:A file hash condition File hash rule conditions can be used with any app because a cryptographic hash value of the app file is generated at the time the rule is created. However, the hash value is specific to that exact version of the file. If you need to allow multiple versions of the file, you need individual file hash conditions for each version of the file.A publisher condition with a specific product version set If you create a publisher rule condition that uses the Exactly version option, the rule can't persist if a new version of the app is installed. A new publisher condition must be created, or the version must be edited in the rule to be made less specific.If an app isn't digitally signed, you can't use a publisher rule condition for that app.If any rules are enforced for the EXE rule collection, you must create rules in the packaged apps and packaged app installers rule collection. Otherwise, all packaged apps and packaged app installers are blocked.A custom configured URL can be included in the message that is displayed when an app is blocked.Expect an increase in the number of Help Desk calls when users encounter apps that aren't allowed.In this sectionArticleDescriptionCreate a rule that uses a file hash conditionThis article for IT professionals shows how to create an AppLocker rule with a file hash condition.Create a rule that uses a path conditionThis article for IT professionals shows how to create an AppLocker rule with a path condition.Create a rule that uses a publisher conditionThis article for IT professionals shows how to create an AppLocker rule with a publisher condition.Create AppLocker default rulesThis article for IT professionals describes the steps to create a standard set of AppLocker rules that allow Windows system files to run.Add exceptions for an AppLocker ruleThis article for IT professionals