netdde fails silently in Terminal Services session

[Paul Davis]

I use netdde in excel to get data from a netdde server.
The spreadsheet works in terminal server sessions on NT4,
and works on the windows2000 console, but simply fails to
getdata if run in a windows2000 terminal services session.

Any ideas?

 

[Matthew Harris [MVP]]

Can you try running filemon from www.sysinternals.com to
see if you spot what the file system is doing when you try
to access the netdde server?

-M

 

[Guest]

Hi Paul

There's an issue when you use NetDDE in a TS session because of the way TS handles network computer IDs. You should check your TS documentation, since each TS session is identified by the user id only and not the computer name, as required by NetDDE (which uses NetBIOS to locate computers on a network). Since you can have multiple active sessions on a single TS server, TS does not identify the machine name when accessing a DDE remote node and therefore the NetDDE request cannot be serviced. I don't know if there's a workaround for this issue, because it is imposed by TS "by design"

----- Paul Davis wrote: ----

I use netdde in excel to get data from a netdde server.
The spreadsheet works in terminal server sessions on NT4,
and works on the windows2000 console, but simply fails to
getdata if run in a windows2000 terminal services session

Any ideas