Adobe cannot connect to dde server

I have just updated to windows 7 and most things are working fine - but I tried to open a pdf with both reader (9) and acrobat 9 and I get the error message adobe cannot connect to dde server
I have tried researching online but cannot find an answer
Help appreciated much

Question Info

Last updated January 3, 2020 Views 36,265 Applies to:



Welcome back to Microsoft Windows 7 Answers Forum! 


You may try the steps as below and check if the issue gets fixed.


Note DDE is Dynamic data exchange and the Explorer uses DDE to open Office documents (supposed you open the document from the explorer window).


DDE Share is a tool for managing the way programs communicate and share data over a network.


If you wish to disable this prompt then you may follow the below steps.


Here, this issue could occur if you have installed any security program on your computer you may get this error message.


Try to turn off the on-access scanning for the application control policy in your security program and check for the issue.


To do that you need to contact your security program support team.


For further information on this you may visit the below links.


If you still face the issue then you may perform a cleanboot on your computer to identify the conflicting program.

Clean Boot Troubleshooting.


1. Click Start, type msconfig in the Start Search box, and then press ENTER.

    User Account Control permission.

    If you are prompted for an administrator password or for a confirmation, type the

    password, Or click Continue.

2. On the General tab, click Selective Startup.

3. Under Selective Startup, click to clear the Load Startup items check box.

4. Click the Services tab, click to select the Hide All Microsoft Services check box, and then click Disable All.

5. Click OK.

6. When you are prompted, click Restart.

7. After the computer starts, check whether the problem is resolved.


If the issue is resolved check which third party program is causing the problem, referring the link given below:


Reset the computer to start as usual.


After you have finished troubleshooting, follow these steps to reset the computer to start as usual:

Click Start, type msconfig.exe in the Start Search box, and then press ENTER.


If you are prompted for an administrator password or for confirmation, type your password, or click Continue. On the General tab, click the Normal Startup option, and then click OK.


When you are prompted to restart the computer, click Restart.


Thanks and Regards:

Suresh Kumar- Microsoft Support.    

Visit our Microsoft Answers Feedback Forum and let us know what you think.

4 people were helped by this reply


Did this solve your problem?

Sorry this didn't help.

Great! Thanks for marking this as the answer.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this response?

Thanks for your feedback.