Windows 10 & DDE

Question

We had Workstation With Windows XP with DDE server and SCADA system (Supervisory control and data acquisition) works as DDE Client, it was working good and communication was very good.

issue:

We upgraded Windows XP to Windows 10 With the same DDE server and the same SCADA system (Supervisory control and data acquisition) that previously Worked as DDE Client with Windows XP. The communication failed and there is no connection between DDE server and DDE Client.

We wonder if there are any security setting in Windows 10 to open the communication between DDE server and DDE Client.”

Answer 1

Still works fine here using excel as a client and server. Also check the ports are open through any firewalls. UDP Port 137 and TCP Ports 135 and 139

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Answer 2

Dear Sir,

We tried your advice but unfortunately, it didn't work. Please be advised that we have GE Cimplicity SCADA ver. 11.0 which tries to communicate with Triconex controller via DDE. The same application was working fine with Windows XP but with Windows 10, it doesn't work.

Answer 3

We tried your advice but unfortunately, it didn't work

What was tried?

we have GE Cimplicity SCADA

The manufacturer shows support. https://www.ge.com/digital/documentation/cimplicity/version111/oxy_ex-2/ipi/topics/c_cimplicity_system_requirements_and_compatibility.html

May want to contact them here.
https://www.ge.com/digital/lp/sales-contact-me

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