I recently migrated from Exchange 2003 to 201 and am getting the following errors in the event log:
Active Manager failed to mount database Public Folder Database on server. Error: An Active Manager operation failed with a transient error. Please retry the operation. Error: Database action failed with transient error. Error: A transient error occurred during a database operation. Error: MapiExceptionADPropertyErr
or: Unable to mount database. (hr=0x80004005, ec=2418)
I followed the instructions in this article (http://www.vware.at/?p=169
) until I ran in to a snag at the bottom. I do not see the msExchOwningPFTree attribute even after resetting the filter.