Applies To:
  • CitectSCADA 4.00

Citect for Windows version 4.0 when running under Windows NT has a maximum number of sessions set to 16. If your Citect for Windows server running Windows NT has all servers enabled (Alarm/Trend/Report/IO Server) this will only allow 4 clients to log in. When the next client tries to login the Citect server will shutdown with one of the following errors:

Out of Msg Instance, Increase [LAN]Sessions


Cannot Open Server <name> NetBIOS Error 11

The NetBIOS error 0x11 is out of sessions.


CIT has confirmed this to be a problem in Citect for Windows versions 4.00. This problem has been fixed in version 4.10.