Instead of downloading a file, you just need to "point" your project to the one already there: Open the (press Alt + F11 in any Office app). Go to Tools > References .

Office updates constantly. A static file from the internet will likely conflict with your build version. Common Error Messages

[ Reference Manager – Outlook 16.0 ] ------------------------------------- Status: ⚠ Outlook 16.0 not found on this machine

These sites often bundle malware, spyware, or outdated versions of the file. Because this file is part of a licensed product, you can acquire it safely from Microsoft. Solutions to Acquire/Repair the Object Library Method 1: Repair Microsoft Office (Recommended) This is the safest way to restore the missing library. Open Control Panel -> Programs and Features .