Cannot open PDFs failed to connect to DDE server-Fatal Error?

[lindyg123]

Hi,

I am suddenly since Friday having issues with my adobe programme, specifically the reader-I cannot open any PDFs.

I have creative cloud account and every time I try to open a PDF, it asks me to log in, which I do, I receive the note saying you are now licensed to use, press continue...and nothing.  I try to open the PDF again and exactly the same thing happens. Continual loop of asking my log in details.

A few mins later I get message saying Fatal Error-Adobe Failed to connect top a DDE server...

Please help me, this is driving me insane!  I have tried to look online for a solution but nothing seems to be working

Many Thanks

Lindy Gray

[ekoksoy]

Hello.

I have same problem. I have licensed XI PRO product. I can't open XI PRO since Monday morning. I have tried all the solution suggestions. But I can not use the program. It certainly does not open. After a long time I see "DDE server error". Emergency solution please.

BR.

Erol

[AmyDrinkie]

I started having the same problem yesterday, Acrobat will not open PDFs and eventually I also receive the "DDE server error." I'm running Windows 10 Pro v1709. My system's last update was on 3/13/18, well before this issue surfaced.

I have also tried uninstalling and reinstalling Adobe Acrobat only to receive an error indicating my serial number is incorrect, which it isn't...

[Adorobat]

Hi AmyDrinkie,

Sorry for the delayed response.

Are you still facing this issue? If yes, please try following troubleshooting steps:

Make sure that the application is not open to the Task Manager.

1-Go to the Task Manager by pressing Ctrl+Alt+Del.

2- Go to the processes in Task Manager.

3- End all processes related to Acrobat.

4- Restart the computer.

5- Launch Acrobat again.

If that doesn't work, Repair the application. Open Acrobat and navigate to Help menu > Repair installation. You may refer to the following thread for the same: Acrobat failed to connect to a DDE server (Installation & updates)

Thanks,

Shivam