Before jumping into the fix, it helps to understand the root cause. The UWA-BR100 uses a chipset. Sony customized the firmware for their ecosystem, but the underlying hardware is standard.
The Sony UWA-BR100 is an older 2.4 GHz only, 802.11 b/g/n USB Wi-Fi adapter. It was never officially sold as a PC adapter but as an accessory for Sony home entertainment devices. As a result, Sony provides . sony usb wireless lan adapter uwabr100 driver windows 10 upd