I think I solved the problem. Some of the public folders didn't have replicas on the new server. I re-ran the addreplicatopf script and things are working better now. I think...
From: Paul Steele [mailto:paul.ste...@acadiau.ca] Sent: June-11-10 9:23 AM To: MS-Exchange Admin Issues Subject: Public Folder problems in Exchange 2010 OWA There always seems to be a new problem with our Exchange 2010 migration. The latest is some bizarre behaviour with Public Folders in OWA. At present we have a single Exchange 2003 server and single 2010 server. We've set up public folder replication between the two servers and public folders appear to be working properly for Exchange 2010 users using Outlook. However, in OWA the public folders show up properly but accessing the content is not so great. If I create new content within OWA, that appears to work correctly and the new content also appears as expected in Outlook. However, accessing existing content (such as a contact list), gives the error "The public folder you're trying to access couldn't be found. For more information, contact your helpdesk". In some cases I don't see the content at all. I've been doing some Google searches and have found various references to this problem (so I know we're not the only place encountering it), but nothing has been all that helpful in resolving it. I get the impression that it's a known problem though. What's the scoop with Public Folders and OWA in Exchange 2010?