In your DAW settings, try selecting a different audio driver (like "FL Studio ASIO" or "DirectSound"), and then switch back to "Focusrite USB ASIO." 2. Reinstall and Update Focusrite Drivers (Crucial)
Updating the companion app Focusrite Control without disconnecting the physical interface often leaves active processes running, causing the installer to partially fail. Step 1: Release Windows Exclusive Audio Control
Never underestimate the power of a full system reboot to clear temporary driver conflicts. Phase 2: Driver & Software Troubleshooting 1. Perform a Clean Installation of Focusrite Control Corrupt driver files are the #1 cause of the 0x54f error. Disconnect your Focusrite interface. Go to Windows . Uninstall Focusrite Control . Uninstall any other Focusrite drivers listed. Restart your computer.
In the menu (as above), go to the Advanced tab. cannot open focusrite usb asio error code 0x54f
The following steps are the most effective community-vetted solutions for resolving this issue on Windows. 1. The "Clean Reinstall" (Crucial Step)
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The interface may not be receiving steady data or power, often due to using a USB hub rather than a direct connection. In your DAW settings, try selecting a different
: The presence of other ASIO drivers, particularly generic ones like ASIO4ALL , is a known trigger for the 0x54f error. These generic drivers can interfere with the enumeration process of your native Focusrite driver, causing your DAW to fail when trying to open it.
Right-click the Windows Start menu and select . Expand the Sound, video and game controllers category.
Some users resolved this by deleting stale ASIO registry keys (backup first): Phase 2: Driver & Software Troubleshooting 1
Locate all entries for and Focusrite USB Drivers and uninstall them as well. Restart your computer.
Before you start: note your device model (e.g., Scarlett 2i2, Clarett, Saffire), Windows version (Windows 10/11), DAW and ASIO host, and whether Focusrite Control is installed. Back up any important project settings.
Before diving into complex driver settings, try these immediate steps:
// If using ASIO SDK in your app if (ASIOSetBufferSize(128) != ASE_OK) // Fallback: query driver's min/max long min, max, preferred, granularity; ASIOGetBufferSize(&min, &max, &preferred, &granularity); ASIOSetBufferSize(preferred);
| Cause | Explanation | |-------|-------------| | | DAW requests a sample rate not supported or currently locked by another app (e.g., Windows Sound, browser). | | Buffer size conflict | Driver cannot set the requested buffer size (too low/high or unsupported). | | Device already in use | Another program (Zoom, Discord, OBS, web browser) holds the driver in shared mode, blocking ASIO exclusive access. | | USB bandwidth / power issue | Intermittent connection or insufficient USB controller resources. | | Outdated or corrupted driver | Old Focusrite Control or USB driver with known bugs. | | Windows audio enhancements | “Audio Enhancements” or “Signal Enhancements” interfere with ASIO low-level access. |