UWP apps require DCH drivers. If you install standard legacy drivers, version 1.1.115.0 will display an RPC connection error.
To understand the search for version 1.1.115.0, one must first understand the fragmentation of Realtek’s software ecosystem. For decades, Realtek HD Audio Manager—a classic Control Panel-style application—was the standard. However, with the rise of Universal Windows Platform (UWP) apps, Microsoft and hardware manufacturers began pushing audio control into a modern, touch-friendly application called "Realtek Audio Console" or "Realtek Audio Control." Version 1.1.115.0 is a specific iteration of this UWP app. realtek audio control 1.1.115.0 download
Disclaimer: This article focuses on the 1.1.115.0 version of the Realtek Audio Console, a UWP app, not the older 2.xx executable driver files. If you'd like, I can: UWP apps require DCH drivers
Press Win + R , type services.msc , and ensure "RtkAudioService" is set to Automatic and Running. For decades, Realtek HD Audio Manager—a classic Control