For CIMPLICITY supported Windows operating systems, you must do the following:
From the Start menu, select Settings.
From the Settings menu, select Control Panel.
In the Control Panel program group, click Services.
In the Services dialog box, select the CIMPLICITY service.
In the Service dialog box:
Set the Log On As field to system account.
Enable the Allow Service to Interact with Desktop option.
Click OK to close the Service dialog box and save your changes.
On the computer where the DDE Server is running, run DDESHARE.EXE (usually found in \winnt\system32\ddeshare.exe).
Select DDE Shares from the Shares menu.
Add a new Share by creating a share name.
Enter the DDE Server's Application Name and Topic into the Old style, New styleand Static fields.
Enable the Allow start application and Is Service option.
Set Type of Access to Full Control.
Click OK to exit the permission and DDE Share Properties dialog box.
Important: When configuring NETDDE, the CIMPLICITY Service should be configured to log on as a user with a non-null password rather than the system account. The computer must be configured so that the user selected has full access to the DDE share.