-639 FFFFFD81   INCOMPLETE AUTHENTICATION

Source:  eDirectory or NDS

Explanation:  An error occurred during the final process of the eDirectory or NDS Authentication.

Possible Cause:  Packet corruption is occurring, or an eDirectory or NDS client is using an undefined packet format. This might be due to faulty LAN drivers, LAN cards, or other LAN/WAN equipment existing between the source and target server.

Action:  Make sure the LAN drivers and cards or LAN/WAN equipment is working, and then try the task again.

Additional information on this error can be obtained by using DSTRACE on the target server with the Authentication flag set.