Hello All,We are in the process of migrating from exchange 03 to 07, TO make a long story short...I am having an issue now with replicating public folders back to 07 from 03.. My initial issue started with the whole free busy issue... I was able to add the 07 server to the 03 public/system folders for replication and vice versa, foldes did replicate, but i was still having an issue with free/busy between each server.. After going through various MS KB articles... http://technet.microsoft.com/en-us/library/dd277548.aspxand this one.. http://technet.microsoft.com/en-us/library/bb727370.aspxand a few other tips in between didnt haveany issues untildoing the last article seems to have broke and type of possible replication between them.. If i run Update-PublicFolderHierarchyI get this error:Update-PublicFolderHierarchy : Cannot start hierarchy replication on public folder database 'EX07SERVER\Second Storage Group\Public Folder Database'.At line:1 char:28+ Update-PublicFolderHierarchy <<<<If i try to add the 07 server back to the 03 servers replication under public folders i get:i get a message there are no public stores which do not have a replica...here is an error i get while on the 07 server, trying to add the 03 server to the replication using the public folders tool--------------------------------------------------------Microsoft Exchange Error--------------------------------------------------------The following error(s) occurred while saving changes:set-publicfolderFailedError:Cannot save the object '\NON_IPM_SUBTREE\APPLICATIONS CONFIGURATION'. Please make sure that you specified the correct Identity and that you have the necessary permissions to save it.MapiExceptionNotFound: Unable to set properties on object. (hr=0x8004010f, ec=-2147221233)Diagnostic context: Lid: 18969 EcDoRpcExt2 called [length=159] Lid: 27161 EcDoRpcExt2 returned [ec=0x0][length=580][latency=0] Lid: 23226 --- ROP Parse Start --- Lid: 27962 ROP: ropSetProps [10] Lid: 17082 ROP Error: 0x8004010F Lid: 30561What i would really like to do is attmept to delete anything to do with public folders on the 07 box and recreate from scratch if possibleincluding any settings in ADSI.. I do have a few active mailboxes on the 07 server so i can notjust delete the server...

Hi,Please try to clarify the issue with me.1. User on Exchange 2003 cannot view free/busy for user on Exchange 2007 server?What is the client for user 2003 and user 2007?2. User on Exchange 2007 cannot view free/busy for user on Exchagne 2003 server?What is the client for user 2003 and user 2007?3. Please try to verify if you have public folder created on Exchange Server 2007?4. Please check if user on Exchange 2007 can view free/busy for user on Exchange 2007.How to Create Public Foldershttp://technet.microsoft.com/en-us/library/aa997965.aspxBesides,I'd like to explain that free/busy information in Exchange 2007 will be stored in the mailbox but not public folder.Exchange Server will try to use Availability Services to retrieve live free/busy information for Exchange 2007 users.What does Exchange 2007 Availability Service do?http://msexchangeteam.com/archive/2006/10/23/429296.aspx Exchange 2007 Users Unable to See Free/Busy Information for Mailboxes on Exchange 2003 Serverhttp://technet.microsoft.com/en-us/library/cc540460.aspxRegards,Xiu