Select the relevant .inf file (often athuw8.inf for Windows 8/10 compatibility).
The primary challenge facing users is a and security policy conflict. Windows 10, particularly in its default 64-bit configuration, requires all kernel-mode drivers to be digitally signed by Microsoft. Legacy drivers designed for Windows 7 or Windows Vista—which might have worked with the UWA-BR100—are often unsigned or use older, deprecated signature algorithms. Attempting to force-install a Windows 7 driver for the Ralink RT2870 chipset results in Error Code 52 (The driver was not digitally signed) or Code 39 (The driver is corrupted). Even when users locate generic drivers from 2010-2012, the operating system rejects them as untrusted, effectively bricking the device for standard users who are unwilling to disable core security features like Secure Boot or Driver Signature Enforcement. sony usb wireless lan adapter uwa-br100 driver windows 10
Go to the official Realtek website or a trusted repository like Station-Drivers or LaptopVideo2Go . Search for: "Realtek RTL8192CU Wireless LAN driver Windows 10" Look for version 1027.5.1120.2015 or newer. Select the relevant