Microsoft Dolby (AC3) Installer ensures that the AC3 audio format is compatible and functional in all Microsoft applications, providing users with an enhanced audio experience across the entire suite of Microsoft software.

Dolby (AC3) is an audio compression technology that was initially known as Dolby Stereo Digital until 1995. This technology uses lossy compression, except Dolby TrueHD. Dolby Digital was first utilized to offer digital sound in cinemas from 35mm film prints. Subsequently, it has been employed for TV and radio broadcasts via satellite, digital video streaming, DVDs, Blu-ray discs, and game consoles.

Microsoft Dolby (AC3) Installer contains both Media Foundation and Directshow Filters.