<div>
this will add the new FileSystemAccessRule to the colection retrieved from the folder:<br />
<br />
$ACL = $ACL.Access + $accessRule
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this will add the new FileSystemAccessRule to the colection retrieved from the folder:

$ACL = $ACL.Access + $accessRule

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All examples I've seen talk about using $acl.SetAccessRule, not .AddAccessRule, to add ACLs. Try that.
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All examples I've seen talk about using $acl.SetAccessRule, not .AddAccessRule, to add ACLs. Try that.

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<div class="content wysiwyg-content">
Hi<br />
<br />
When I try and set &quot;ReadPermissions&quot; for a security group to a UNC path - eg \\computer\test, the group is added with the required permissions. However the existing permissions are all removed.<br />
<br />
If I run the script against the local drive, eg c:\test, the permissions are not deleted.<br />
<br />
How do I keep the existing permissions when applying the script to a UNC path?<br />
<br />
Please note that I have to use UNC path and can not do local drive or use C$<br />
<br />
Regards<br />
<br />
<br />

<pre><code id="code-8224267">$folder = &quot;\\computer\test&quot;
$ADgroup = &quot;AD_GROUP&quot;

$ACL = get-acl $folder
$accessLevel = &quot;ReadPermissions&quot;
$inheritanceFlags = &quot;None&quot;
$propagationFlags = &quot;none&quot;
$accessControlType = &quot;Allow&quot;
$accessRule = New-Object System.Security.AccessControl.FileSystemAccessRule($ADgroup,$accessLevel,$inheritanceFlags,$propagationFlags,$accessControlType)
$Acl.AddAccessRule($accessRule)
Set-Acl $folder $Acl</code></pre>
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</div>


Hi

When I try and set "ReadPermissions" for a security group to a UNC path - eg \\computer\test, the group is added with the required permissions. However the existing permissions are all removed.

If I run the script against the local drive, eg c:\test, the permissions are not deleted.

How do I keep the existing permissions when applying the script to a UNC path?

Please note that I have to use UNC path and can not do local drive or use C$

Regards



powershell: set-acl to UNC path removes existing permissions

Windows PowerShell is a task automation and configuration management framework from Microsoft, consisting of a command-line shell and associated scripting language built on the .NET Framework. PowerShell provides full access to the Component Object Model (COM) and Windows Management Instrumentation (WMI), enabling administrators to perform administrative tasks on both local and remote Windows systems as well as WS-Management and Common Information Model (CIM) enabling management of remote Linux systems and network devices.