Finding the installer for a specific legacy version of Avid Media Composer, such as version 8.4.5, has become more restricted due to recent changes in Avid’s hosting policies. Important: Avid Legacy Installer Removal

Avid Media Composer 8.4.5 requires activation and licensing to use. You'll need to create an Avid account or sign in to an existing one to activate the software.

: Windows 7 Professional (SP1), Windows 8.1, or Mac OS X (compatible with versions available in 2016).

Avid Download Center (if you have a valid license with a support/update plan active)

For macOS (High Sierra or older only):

If you already own a license for version 8.4.5, you may still find it in your specific account history, though it is no longer publicly listed in the general repository.

As a maintenance patch, v8.4.5 addressed several "deal-breaker" bugs found in 8.4.0–8.4.4: Hardware Integration: It added support for the Avid Artist | DNxIO

This report outlines the status, features, and official availability of Avid Media Composer version 8.4.5. Release Overview Avid Media Composer v8.4.5 was officially released on January 5, 2016

Major Fixes: Addressed issues with tri-level sync for 2k/4k formats, audio scrubbing hangs, and corrupted UHD 4k playback in specific modes.