I have exported all the MA from previous IIFP 2003 . Imported all the MAs agent to newly installed FIM 2010 synchronisation services. Except one MA during the import , it showed : "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index". at the directory portion . Any ideas ?

Which type of MA is throwing the error? Is it an AD MA? That has been discussed before, see these posts: - FIM 2010 AD MA Creation error "Index was out of range" - Cannot add AD MA after Update Package 1 for Microsoft Forefront Identity Manager (FIM) 2010 - Index was out of range ... The posts refer to AD schema modifications/updates that might cause this. Kind regards, Peter Peter Geelen (Traxion) - Sr. Consultant IDA (http://www.fim2010.be) [If a post helps to resolve your issue, please click the "Mark as Answer" of that post or "Helpful" button of that post. By marking a post as Answered or Helpful, you help others find the answer faster.]