If you have an existing Realtek driver, it is best to remove it first to avoid conflicts: Device Manager and select it). Sound, video and game controllers Right-click Realtek High Definition Audio and select Uninstall device
The file refers to the R2.79 version of the Realtek High Definition Audio driver, released around June 2015 . This specific version gained historical significance as it was one of the first "all-in-one" installers designed to provide broad support across multiple generations of Windows. Technical Overview of Version R2.79