Excel on another computer cannot connect to DDE C# Server

If Excel and DDE Server are in the same computer, they can communicate and show result.

But If excel is on another computer, after setting DDEShare in the server assigning sharename and trust.
Still not work.

I type　='\\machinename\NDDE$'|'myapp$'!Number1
It show "#N/A".
It seems that excel cannot connect to the dde server as it does not show the connected by the excel client.

Please help!!!!

I have done the DDE Server in C# with NDDE.

When Excel as DDE Client and DDe Server are in the same computer, they can communicate.



But when Excel is on another computer, they cannot even after setting ddeshare in the DDE server.

I find that NDDEAGNT.exe not exists in my computer. Is it the reason??

Due to this file is critical to start conservation between client and server in dde network!!!