In Acrobat, merging several files into a PDF leads to the error – “Acrobat failed to connect to a DDE server.”
Note: Recommend to use when taking a backup of the Windows registry before making any changes
Step 1: Open the Windows Registry Editor:
- Select Start=> Run.
- Type “Regedit” in the Open field and choose OK.
Step 2: Navigate to following registry key:
Step 3: Take a backup: Right-click the Application key and export to your desktop.
Step 4: Convert the key “AcroviewA18″ into “AcroviewR18″.
(The value of A and R depends upon the version of Acrobat installed)
Step 5: Close the registry editor and Acrobat.
Discharge again Acrobat and check whether the problem is fixed. If not, try the next approach.
Step 1: Test whether an Anti-virus program is installed on equipment.
Step 2: If yes, the program is disable. Test whether the problem is solved.
Step 3: Update your Acrobat to the latest version, and test whether the problem is solved.
In order to update automatically from Acrobat, select Help > Check for updates. Making order of steps in the Updater window to download and set up the latest updates.