I have Exchange 2003 in Native-mode. How can i change Administrative permissions to public folders using VBScript or something command-line utility? I've tried edit "admindescriptor" WebDAV attribute, but failed at it. I've got 400 error. Here's an example of my test script: strResFile = ".\" & WScript.ScriptName & ".txt" Set FSO = CreateObject("Scripting.FileSystemObject") Set ResFile = FSO.OpenTextFile(strResFile, 2, True) set req = CreateObject("microsoft.xmlhttp") folderurl = "http://EXCHANGE-SERVER/ExAdmin/Admin/example.com/public folders/test/" NewXMLReq = "<?xml version='1.0'?>" NewXMLReq = NewXMLReq & "<d:propertyupdate xmlns:d='DAV:' xmlns:S='http://schemas.microsoft.com/security/' xmlns:exsec='urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/' exsec:dt='microsoft.security_descriptor' S:from_mapi_tlh='1'>" NewXMLReq = NewXMLReq & "<d:set>" NewXMLReq = NewXMLReq & "<d:prop>" NewXMLReq = NewXMLReq & "<exsec:admindescriptor>" NewXMLReq = NewXMLReq & "<S:security_descriptor>" NewXMLReq = NewXMLReq & "<S:dacl S:defaulted='0' S:protected='1' S:autoinherited='0'>" NewXMLReq = NewXMLReq & "<S:effective_aces>" NewXMLReq = NewXMLReq & "<S:access_allowed_object_ace S:inherited='0'>" NewXMLReq = NewXMLReq & "<S:access_mask>100</S:access_mask>" NewXMLReq = NewXMLReq & "<S:sid>" NewXMLReq = NewXMLReq & "<S:string_sid>S-1-5-21-2856554560-2810845470-2975245544-101316</S:string_sid>" NewXMLReq = NewXMLReq & "<S:type>user</S:type>" NewXMLReq = NewXMLReq & "<S:nt4_compatible_name>EXAMPLE\user</S:nt4_compatible_name>" NewXMLReq = NewXMLReq & "<S:ad_object_guid>{c79a2523-873b-49fc-b9f8-9c364f703f1e}</S:ad_object_guid>" NewXMLReq = NewXMLReq & "<S:display_name>Example User</S:display_name>" NewXMLReq = NewXMLReq & "</S:sid>" NewXMLReq = NewXMLReq & "<S:object_type>{d74a8769-22b9-11d3-aa62-00c04f8eedd8}</S:object_type>" NewXMLReq = NewXMLReq & "</S:access_allowed_object_ace>" NewXMLReq = NewXMLReq & "</S:effective_aces>" NewXMLReq = NewXMLReq & "<S:subcontainer_inheritable_aces>" NewXMLReq = NewXMLReq & "<S:access_allowed_object_ace S:inherited='0' S:no_propagate_inherit='0'>" NewXMLReq = NewXMLReq & "<S:access_mask>100</S:access_mask>" NewXMLReq = NewXMLReq & "<S:sid>" NewXMLReq = NewXMLReq & "<S:string_sid>S-1-5-21-2856554560-2810845470-2975245544-101316</S:string_sid>" NewXMLReq = NewXMLReq & "<S:type>user</S:type>" NewXMLReq = NewXMLReq & "<S:nt4_compatible_name>EXAMPLE\user</S:nt4_compatible_name>" NewXMLReq = NewXMLReq & "<S:ad_object_guid>{c79a2523-873b-49fc-b9f8-9c364f703f1e}</S:ad_object_guid>" NewXMLReq = NewXMLReq & "<S:display_name>Example User</S:display_name>" NewXMLReq = NewXMLReq & "</S:sid>" NewXMLReq = NewXMLReq & "<S:object_type>{d74a8769-22b9-11d3-aa62-00c04f8eedd8}</S:object_type>" NewXMLReq = NewXMLReq & "</S:access_allowed_object_ace>" NewXMLReq = NewXMLReq & "</S:subcontainer_inheritable_aces>" NewXMLReq = NewXMLReq & "</S:dacl>" NewXMLReq = NewXMLReq & "</S:security_descriptor>" NewXMLReq = NewXMLReq & "</exsec:admindescriptor>" NewXMLReq = NewXMLReq & "</d:prop>" NewXMLReq = NewXMLReq & "</d:set>" NewXMLReq = NewXMLReq & "</d:propertyupdate>" WScript.Echo NewXMLReq ResFile.WriteLine NewXMLReq req.open "PROPPATCH", folderurl, false req.setRequestHeader "Content-Type", "text/xml" req.setRequestHeader "Depth", "0" req.send NewXMLReq set oResponseStatus = req.Status set oResponseDoc = req.responseXML WScript.Echo oResponseStatus WScript.Echo oResponseDoc