NDde -Problem in win 7 64-bit

Apr 4, 2013 at 2:52 PM
Hi,
I have done a project on DDE using NDde and it covers all the needs. I have developed a windows service which will do the required DDE operation. This was successful in Win xp machine. When I deployed my Application in Windows 7 64-bit OS i'm getting the error.

("The client failed to connect to "MLDdeSrvr|data". Make sure the server application is running and that it supports the specified service name and topic name pair.")

The same code is working correctly if I deploy the Application as windows Forms and run as administrator. I tried running the service in all user types but its unsuccessful.
Can anyone help me in solving the issue. Thanks in advance.