Outlook Add-in : What is a COM Add-in? What You Need to Create a COM Add-in?


What is a COM Add-in?


COM add-ins are a feature in Microsoft Office and are supported by all Office programs, including Outlook.


Key benefits of COM add-ins include:














COM add-ins run in-process with the host program, so custom code generally runs faster than code implemented in Visual Basic for Applications.



The basic COM add-in architecture is consistent across all Office programs, whereas in previous versions of Office, each program had its own add-in architecture.



You can create one COM add-in to use with more than one Office program.


What You Need to Create a COM Add-in?


In addition to Outlook, you need one of the following development environments to create a COM add-in for Office or Outlook:














Visual Basic 5.0 or later (Visual Basic 6.0 is preferred)



Microsoft Office Developer, which includes the ability to compile a Visual Basic for Applications project into a Dynamic Link Library (DLL)



Any other COM-compliant development environment, such as Microsoft C++ or Microsoft J++

Comments (3)
  1. Yvonne says:

    In layans terms  please,  as the  above makes no sense to me

  2. Nonny says:

    Could you describe this in laymans terms please. I've just had a message  on screen that says "Outlook detected a COM Add-in problem – we have disabled  it"

    What exactly  does this mean? What  action do I take?

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