True Solution to Acrobat Failed to Connect to DDE Server However, when your computer is in your hang state and nothing to operate in quite a remarkable time, in wheresoever we face the error, as Acrobat Failed to Connect to DDE Server. While this procedure is antique, yet if you send data in numerous amounts, then you need to face the problem. In these cases, Digi Knowlogy experts share some tips which through many options you can obtain to solve this problem and much more.