Network DDE (NetDDE) Service Defaults in Windows XP

Provides network transport and security for Dynamic Data Exchange (DDE) for programs running on the same computer or on different computers. If this service is stopped, DDE transport and security will be unavailable. If this service is disabled, any services that explicitly depend on it will fail to start.

Default Settings

Startup type:
Windows XP HomeManual
Windows XP ProfessionalManual
Windows XP Home SP1Manual
Windows XP Professional SP1Manual
Windows XP Home SP2Disabled
Windows XP Professional SP2Disabled
Windows XP Home SP3Disabled
Windows XP Professional SP3Disabled
Display name:Network DDE
Service name:NetDDE
Service type:share
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NetDDE

Default Behavior

Network DDE is a Win32 service. It won't start until the current user starts it in Windows XP Home, Professional, Home SP1, Professional SP1. This service is disabled and isn't loading or starting in Windows XP Home SP2, Professional SP2, Home SP3, Professional SP3. When the Network DDE service is started, it is running as LocalSystem in a shared process of netdde.exe. Other services and drivers are allowed to run in the same process. If the Network DDE fails to start, the technical information about the error is added to the Event Log. Windows XP startup should proceed, but a message box should be displayed informing the user that the NetDDE service has failed to start.


Network DDE depends on the Network DDE DSDM service.

The ClipBook depends on the Network DDE service.

Restore Default Startup Configuration for Network DDE

1. Select your Windows XP edition and service pack, and then click Download.

2. Save the WinXP_NetDDE_Service_Startup.cmd file to a local storage device.

3. Run the saved file.

4. Restart the computer.

The NetDDE service is using the netdde.exe file that is located in the %WinDir%\system32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows XP installation media.