We have some problems with XP stations running 4.91sp2 and ZEN7.
When we try to establish remote access we get an "1456: The agent
failed to read information from the eDirectory Server. Verify that the
workstation object is valid and the Middle Tier server is up and
running." message.
The TID's we found did not help until now. All stations are connected
via LAN ( not VPN ).