If you are attempting to use this adapter on a Windows 10 PC, consider the following options: 1. Check for Built-in Windows Drivers
available for this product. However, since the adapter uses a standard Atheros or Buffalo chipset, some workarounds exist for those determined to get it running on a desktop or laptop. Sony Asia Pacific The Reality of Official Support Intended Use
: Legacy USB chipsets struggle with Windows 10 power saving features. Open the adapter's properties in Device Manager, navigate to the Power Management tab, and uncheck “Allow the computer to turn off this device to save power” .
Run the installer. Follow the prompts.
Do you have you can test to see if the port works?
That said, there are for advanced users. The most reliable method involves disabling Driver Signature Enforcement (via the Advanced Boot Options menu) and then forcing a manual installation of the 64-bit Ralink RT2870 driver from a trusted source (e.g., the official MediaTek legacy driver archive). Alternatively, some users have successfully extracted the driver from the Sony DWA-171 adapter package, which shares a similar chipset family. However, these solutions are temporary (driver signature enforcement re-enables after a reboot) or require disabling critical security protections, rendering the machine vulnerable to rootkits. A more practical, albeit defeatist, solution is to simply replace the $5 legacy dongle with a modern, $15 USB Wi-Fi adapter that natively supports Windows 10 (e.g., from TP-Link, ASUS, or Edimax).
You need to obtain the driver built for the internal hardware rather than the Sony brand name. sony usb wireless lan adapter uwa-br100 driver windows 10
Select . Select Network Adapters -> Atheros Communications Inc.
A: No. Sony discontinued support for this adapter before Windows 10 was released.
After the installation finishes, restart your computer to ensure the changes take effect. If you are attempting to use this adapter
On the next screen, do not search for the location. Instead, click .
Check “Run this program in compatibility mode for” and select Windows 7 .