Windows Server 2012 R2 introduced a new version of SMB. Technically it’s SMB version 3.02, but we continue to call it just SMB3. The main changes are described at

With this new release, we made a few changes in SMB PowerShell to support the new scenarios and features.

This includes a few new cmdlets and some changes to existing cmdlets, with extra care not break any of your existing scripts.This blog post outlines one of the 7 set of changes related to SMB PowerShell in Windows Server 2012 R2.


Simpler setting of ACL for the folder behind a share


In Windows Server 2012, the SMB share has a property that facilitates applying the share ACL to the file system folder used by the share.

Here’s the syntax for a share named Share1:


  • (Get-SmbShare –Name Share1 ).PresetPathACL | Set-Acl


In Windows Server 2012 R2, we have improved this scenario by providing a proper cmdlet to apply the share ACL to the file system used by the share.

Here’s the new syntax for the same share:


  • Set-SmbPathAcl –ShareName Share1




1) The Windows Server 2012 syntax continues to work with Windows Server 2012 R2, but the new syntax is much simpler and therefore recommended.

2) There is known issue with Windows Server 2012 R2 Preview that causes this new cmdlet to fail when using non-Unicode languages. As a workaround, you can use the old syntax.

3) This blog post is an updated version of the September 2013 post at focused on a single topic.