We have been trying to access the pr_conflict_entryid from a mailbox item (conflict notification) and have been unsuccessful so far. Does anyone know if this property is exposed? Via the MAPI schema? Other places? Any help is appreciated. Have been trying to access property via http://schemas.microsoft.com/mapi/proptag/x3FF00102 We have also been converting this binary value to a string, but alas it always returns -1. The value is accessible via MAPI apis such as CDO so it does exists.