Restrict access to a folder installed using wix installer

问题

My use case is to run a msi package which creates a folder, in addition to doing other things, which should be accessible only to the Administrators. I tried using the util:PermissionEx element but the wix page for the PermissionEx element doesn’t really tell about what do different attributes do. I tried various things, one eg below, but I was still able to access the created folder from both administrator and a non-admin user account.

<Directory Id=“TmpDir” Name=“TmpDir”>

<Component Id="CreateDir" Guid=“<>">

    <CreateFolder>

      <util:PermissionEx User="Users" Read="no" GenericRead="no”/> <!— Tried different combinations here —>

    </CreateFolder>

  </Component>

  </Directory>

Any help as to what should I do to achieve what I have stated above. Let me know if my question is unclear and I can explain in a more detail or in a different way. Also the Package has

InstallScope="perMachine"
InstallPrivileges="elevated"

来源：https://stackoverflow.com/questions/42152846/restrict-access-to-a-folder-installed-using-wix-installer