For Win10/11, use your motherboard manufacturer’s latest audio driver (includes custom features) or let Windows Update fetch the official Realtek UWP driver (version 6.0.9xxx+).
This filename, realtek-high-definition-audio-64bit-win7-win8-win81-win10-r279.exe , refers to an older Realtek HD Audio driver package (version R2.79). Here’s a useful review based on typical user experiences and technical notes:
An official Realtek driver for onboard audio chips (ALC8xx, ALC9xx series) for Windows 7 through 10 (64-bit).