COM and DCOM Registry Settings

A version of this page is also available for

Windows Embedded CE 6.0 R3


The registry stores information necessary to configure the system for applications and hardware devices. The registry also contains information that the operating system continually references during operation.


Some registry settings can affect the security of your device. If a setting has security implications you will find a Security Note in the topic that describes the registry settings.


For Windows Mobile: The ability to change registry settings may be affected by the security settings of your target device. In most cases, these settings are chosen by the device OEM and cannot be changed.

To become functional, COM servers and containers must add information to the system registry. Most of that information is stored in keys and named values under the HKEY_LOCAL_MACHINE\SOFTWARE\Classes and HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\OLE keys.


HKEY_CLASSES_ROOT is equivalent to HKEY_LOCAL MACHINE\SOFTWARE\Classes and that these keys can be used interchangeably.

The named values associated with the HKEY_LOCAL_MACHINE\SOFTWARE\Classes registry key contain information about an application that is needed to support COM functionality.

For more information, see the following topics:

See Also


COM and DCOM Security
COM Authentication
COM Access Control
DCOM Security Configuration Utility
Developing Secure ActiveX Controls

Other Resources

Component Services (COM and DCOM)