Cdo.dll Error Solution Guarantee

The Collaboration Data Objects (CDO), originally known as Active Messaging, enables users to access the Global Address List and other server objects, on top of the contents of the mailing boxes and the public folders. CDO refers to the cdo.dll module.

The DLL cdo.dll functions with the Outlook Object Model in order to access and log on to Microsoft Outlook application. It is used in basic Outlook tasks such as loading the address book or the directory from which user can pick contacts. However, the Outlook Object Model is entirely independent from the cdo.dll module. As such, the module can not really manipulate Outlook objects given that it does not offer any event-based function.

Although there are boundaries to the uses and functions of the cdo.dll module, it is still necessary for the Microsoft Exchange application.

The cdo.dll file is an additional scripting interface to the Messaging Application Programming Interface (MAPI). It allows you to address programmable messaging objects which consists folders, messages, attachments, recipient addresses, and other messaging components. These objects are offered as part of Microsoft Visual Basic and extensions to other programmable objects such as forms and controls.

Outlook and the DLL cdo.dll are both MAPI applications, meaning they use MAPI APIs to access their data and, hence, the underlying providers. They share a common set of Properties that jointly define different classes of messages and different functionality. In general, the cdo.dll application and Outlook implements an API to manipulate sets of properties together to accomplish tasks, such as scheduling a meeting and does the presentation of that data to the end user.

If they do not agree on what particular properties mean, or on the mechanisms that controls the processing logic, problems interoperating between Outlook and the cdo.dll application may exist. Although Outlook continues to be updated and expanded with every version, the cdo.dll module is more or less static at the same level of functionality it has possessed for many years.

Cdo.dll is created by:
Microsoft Corporation
Microsoft Support Site

Known file path:
C:\ Program Files\ Common Files\ System\ MSMAPI\ 1033\ cdo.dll

What is a DLL?

Your operating system comes pre-installed with Microsoft DLL’s and most third party programs also install DLL’s.

DLL (Dynamic Link Library) is Microsoft’s implementation of the shared library concept. Meaning there’s a DLL library on your computer and each DLL can be shared among different Microsoft and third party programs. This shared library method helps your computer run faster by having fewer operations running at the same time.

When a DLL is missing or corrupt it may show an error message and programs may fail or crash.

Because DLL’s are shared, one missing or corrupt DLL may affect multiple programs on your computer.


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