I am using Adobe Acrobat Pro XI. I dragged over 200 emails out of my Outlook 2016 to the "Combine Files" window in order to create one PDF file. It was combining them quickly but all of a sudden a Fatal Error message "Acrobat failed to send a DDE command." pops out. I have to now click OK for every single email or it will not combine anything (extremely time consuming). This only happens when I combine emails to PDF. Please help.
[Moved from non-technical Forum Lounge to specific Program forum... Mod]
[Here is the list of all Adobe forums... https://forums.adobe.com/welcome]
Please open task manager and close all the Adobe Acrobat instances.
Taskbar> Task manager >Close all the Adobe Instances running at the background.
Re-open the Acrobat and try combing the file again and see if that works.
Let us know if this doesn't help.