FIX: Acrobat failed to connect to a DDE server

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Updated:

Posted: February 2019

  • When information technology comes to reading, editing and creating PDF files, no software has a more reverberative name that Adobe Acrobat.
  • Unluckily, even this healed-known political program has its own fair share of issues, and we will be looking over how to touch o the Acrobat failing to relate to a DDE server error on Windows 10.
  • If you motivation even much guides that cover such issues, check out our dedicated hub for troubleshooting System Errors, and you will surely find the article that you need.
  • For even up more comprehensive and utile guides, go over our Adobe brick Fix page.

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The Adobe Acrobat PDF (Portable Document Format) computer software throws come out this error message for some users:

Acrobat unsuccessful to connect to a DDE server

That error message can crop up when users try to open PDFs operating theatre flux documents within Adobe Acrobat.

Consequently, users can't open a PDF or merge documents in Acrobat when the issue arises. This is how users can doctor the Acrobat unsuccessful to connect to a DDE host error in Windows 10.

How can I fix Acrobat's DDE server error?

1. Update the Acrobat software package

  1. Good-sink in the Outset menu and prime Head for the hills.
  2. Enter appwiz.cpl in the text package and penetrate Okay.
  3. Select Adobe brick Acrobat and click Uninstall.
  4. Click the Yes button to confirm.
  5. Restart Windows after uninstalling Adobe Acrobat.
  6. Download Adobe brick Acrobat from the formalized page

The DDE waiter fault will more likely rise for older versions of Adobe Acrobat. Adobe mightiness have released an update that fixes the DDE server issue. Gum olibanum, updating Acrobat to the latest version mightiness fix the issue for some users.

Users can update the software past clicking Help > Check for Updates in Acrobat. That volition open the Updater window that installs updates.

2. Turn off antivirus software

Some third-party antivirus utilities mightiness flag Adobe Acrobat when users try to merge PDFs. Thusly, turning off antivirus software program is another potential drop resolution for the DDE error.

Users can ordinarily select to temporarily disable antivirus software by right-clicking their system tray icons and selecting a incapacitate, exit, interruption, or turn off the option.

If there isn't a disable option on the software's context menu, open the utility's primary window and search for a turn off option on its settings tab.

3. Edit the Registry

  1. First, press the Windows key + X hotkey.
  2. Select Run to open that accessory.
  3. Input regedit in the text box and beseech Enter to open the Registry Editor in chief.
  4. Accede this registry path in the address stop:
    • ComputerHKEY_CLASSES_ROOTacrobatshellopenddeexecapplication.
  5. Select the application Key on the left of the Registry Editor's window.
  6. Double-click Nonpayment to nonunion the Redact Twine window shown directly below.
  7. Then erase the current AcroviewA18 or AcroviewA19 text in the Value data box.
  8. Enter AcroviewR18 in the Value data box if the original value was AcroviewA18.
    1. Note that the A and R values hinge on the version installed, so some users might pauperism to recruit AcroviewR19.
  9. Then click the OK button.
  10. Restart Windows after editing the registry.

If you can't edit your Windows 10's register, read this handy head and detect the easiest solutions to the issue. This registry redact is one of Adobe's official resolutions for the DDE error. The edit requires that users modify an application key for Acrobat.

4. Repair Acrobat

  1. Approximately users have fixed the DDE server wrongdoing past repairing Acrobat's installation. To do that, active Run.
  2. Enter appwiz.cpl in Run and weightlift Return.
  3. Select the Adobe Acrobat software.
  4. Press the Change button to open the window in the image direct below.
  5. Select the Mend installation errors in the program option.
  6. Press the Future button.
  7. Suction stop Finishing when the repair installation litigate is done.

5. Turn soured Protected Mode at startup

Click Edit > Preferences in Acrobat to open the window in the shot directly below.

  1. Click Certificate (Enhanced) happening the left of that window to acceptive the options shown below.
  2. Deselect the Enable Protected Mode at Inauguration option.
  3. Deselect the Enable Enhanced Security option.
  4. Close the Preferences window and Adobe Acrobat.
  5. Thenceforth, opened Adobe to see if that firmness has fixed the DDE server error.

Deselecting the Protected Mode at startup and Increased Security settings is another solving that has fixed the DDE server error some Acrobat users.

Those are resolutions that have fixed the DDE server error for Adobe Acrobat users. So, they'll probably resolve the error. If further fixes are still needed, however, Acrobat users can log in to adobe.com to open a support case.

If you have any more suggestions or questions, wear't waffle to get out them in the comments down the stairs and leave surely take a look.

Frequently Asked Questions

  • This is an error substance that will usually trip when users try out to merge six-fold files into one PDF.  Until you can fix this issue, consider exploitation a different PDF reader to perform those tasks.

  • The DDE server is an obsolete standard for interprocess communicating used inside Microsoft Windows that enables data transfer through with the client-server precept.

  • Unmatched way to ensure an error-free connection to the DDE waiter with Adobe is to dispatch whatever Symantec Endpoint policies when using the political platform.