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To update the ACL, you’ll need to add a rule (ACE) to the ACL that’s meant for the registry. Since you’re using the registry, this particular ACL captured only works with the registry. In the above section, you captured an ACL with Get-Acl. You can see an example of using the Export-CliXml cmdlet to save objects to disk here. If you’re concerned, you could even save the ACL to the file system using the Export-CliXml cmdlet, but that’s for another day. Now that you have the existing ACL captured, you can change it. IdentityReference : APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES PS> $acl = Get-Acl 'HKCU:\AppEvents\EventLabels\ActivatingDocument' PowerShell provides a cmdlet called Get-Acl that will do just that. You can pick any key you’d like to try this out.īefore you change anything, it’s a good idea to see what the current ACL is and to make a backup if things go awry. I’ll randomly pick one with the path of *HKCU. Start out by looking for a registry key you’d like to change permissions on. Finding Existing Registry Key Permissions The ACL defines what and how an account can access that registry key.Ī registry permission (ACL) defines what account can access a particular registry key and what kind of permissions that account has. These ACLs then apply to a registry key.ĪCLs are a common term amongst many entities in IT, and ACLs assigned to registry keys are no different. For this article, a registry permission is a set of access control entries (ACEs) that make up an access control list (ACL).