Realtek onboard audio and Nvidia HD Audio drivers can conflict with ASIO.
Temporary test:
If error 0x54f goes away, you know there’s a conflict. Keep the onboard audio disabled while using the Focusrite, or update its drivers. cannot open focusrite usb asio error code 0x54f
The "Cannot open Focusrite USB ASIO error code 0x54f" is almost never a hardware failure—it’s a Windows power management or driver access conflict. In 90% of cases, disabling USB selective suspend and releasing the device from system sounds will solve the problem immediately.
If you’ve worked through all 10 steps and the error persists, your Focusrite’s USB controller chip may be failing. Contact Focusrite Support (they are responsive) or test the interface on another computer to isolate the issue. Realtek onboard audio and Nvidia HD Audio drivers
Now restart your computer, disable those power-saving settings, and get back to recording.
Have a different error code? Check our other guides for "Error 0x54e", "Error 0x00000001", or "ASIO device not present". If error 0x54f goes away, you know there’s a conflict
This seems counterintuitive for ASIO (which needs exclusive control), but some Windows builds cause a deadlock when this option is also checked at the system level.
Steps:
Now restart your DAW. The ASIO driver will ignore this setting, but Windows will stop trying to share the device mid-session.