If the file is truly missing from the Office folders, perform an Online Repair Control Panel Uninstall a Program > select Microsoft 365/Office > Stack Overflow Alternative: Late Binding
For modern development outside of VBA, you can find the Microsoft Office Interop NuGet package on NuGet.
How to Correctly Install and Restore the Outlook 16.0 Library
Dim olApp As Object Set olApp = CreateObject("Outlook.Application") Use code with caution. Copied to clipboard microsoft outlook 16.0 object library dll download
Install-Package Microsoft.Office.Interop.Outlook
Outlook.Application oApp = new Outlook.Application();
If you are developing a VBA macro, a C# application, or an automation script that interacts with Microsoft Outlook 2016, 2019, 2021, or Microsoft 365, you have likely encountered references to the . If the file is truly missing from the
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There is often confusion about the library file's name. You might encounter two primary file names in this context:
The core file behind this library is , not a standard .dll file. Type libraries ( .olb ) serve the same purpose for Component Object Model (COM) automation by defining the structure of Outlook's objects, methods, and properties. Why You Should Avoid Third-Party DLL Download Sites Security and sourcing There is often confusion about
The Outlook Object Library is a crucial component for developers who want to extend Outlook's functionality or integrate it with other applications. By using the library, developers can create custom solutions that automate tasks, enhance productivity, and provide a more seamless user experience.
If you are receiving errors like "Microsoft Outlook 16.0 Object Library missing" or "Can't find project or library" when trying to run automated emails or calendar actions, your Office installation is likely broken, or the library is not properly registered.
Type appwiz.cpl and press to open Programs and Features .
Scroll through the list to find your or Microsoft 365 installation. Right-click the Office application and select Change .
Note that the COM-based Outlook Object Library is not available for Outlook on Mac.