If you are developing a tool for others who might have different versions of Outlook (like Outlook 15 or 17), use instead. This removes the need to select a specific library version in your project references, making your code "version-agnostic".
He scoured forums and found chatter about a missing DLL: a COM component that let scripts talk to Outlook. Someone on a thread called it “the tiny gatekeeper.” Elliot didn’t want to paste random DLLs into system folders, but the problem nudged him into a more careful approach. He imaged the failing machine, noting its Office build number and Windows updates. He walked the build history like a detective retracing a suspect’s steps. microsoft outlook 16.0 object library dll download
Note that the COM-based Outlook Object Library is not available for Outlook on Mac. If you are developing a tool for others
The file you’re looking for is typically (Object Library) or related runtime DLLs like outllib.dll or outlvba.dll . These files are not standalone downloads – they are core components of Microsoft Office/Outlook itself . Someone on a thread called it “the tiny gatekeeper
is the recommended professional approach. This method does not require a specific library reference to be checked in the "References" menu. Stack Overflow