Although the command is completed successfully and the result of the cmdlet shows the correct permissions, you notice that the Access Based Enumeration filtering does not reflect the newly set permissions. Additionally, when you check the permissions of the link in the DFS Management Console, you notice that the Use inherited permission from the local file System option is still selected.
Microsoft is aware of this problem with the Windows PowerShell cmdlet Grant-DfsnAccess.
Manually disable inheritance in the DFS Management Console by selecting the Set explicit view permissions option.
Use the dfsutil property sd grant command instead, as in the following example: