Standard Serial over Bluetooth link (COM47) Driver

The Standard Serial over Bluetooth link (COM47) driver lets Windows applications communicate with a paired Bluetooth device through a virtual serial port. Provided by Microsoft as part of Windows Bluetooth support, it is useful for compatible equipment that exchanges data over a serial connection, such as diagnostic tools, scanners, or GPS receivers. COM47 is the port number assigned by Windows, not a separate hardware model.

Key Features

• Virtual serial communication: Provides a COM-port interface for Bluetooth devices that support the Serial Port Profile (SPP).
• Application compatibility: Allows software with serial-port settings to communicate wirelessly when configured to use COM47.
• Windows integration: Works alongside the Bluetooth adapter driver and Windows pairing services; it does not replace the adapter’s own driver.
• Device management: Appears in Device Manager, typically under Ports (COM & LPT), where you can check its status and driver details.

How to Install Standard Serial over Bluetooth link (COM47) Driver

1. Check your Windows version and Bluetooth adapter. The listed supported systems are Windows 10, 8.1, 7, Vista, and XP. For Windows 10/11 systems, verify compatibility with your Bluetooth adapter and connected device separately; Windows 11 is not included in this listing.
2. Use a trusted driver source. Before choosing a Standard Serial over Bluetooth link (COM47) driver download for Windows, check Windows Update or the computer manufacturer’s support resources. This Microsoft component is generally supplied through Windows, so a separate installer may not be necessary. Treat any third-party “free download” offer cautiously.
3. Pair the Bluetooth device. Turn on the device, enable its discoverable mode, and add it through Windows Bluetooth settings. If supported, configure its serial-port service to let Windows install the virtual COM-port component.
4. Check or update the driver. Open Device Manager, locate the serial-over-Bluetooth entry, and inspect its status. Use the driver update option if available, or install the appropriate Bluetooth adapter package from its manufacturer.
5. Configure your application. Select COM47 in the software that uses the device. If Windows assigns a different port after pairing, use that number instead. Restart the application and test the connection.

Keep both Windows Bluetooth components and the adapter driver updated to the latest version compatible with your system. An update may help resolve connection problems, but pairing, device settings, and the selected COM port also matter. Older Windows versions may no longer receive driver updates.

Common Issues and Fixes

• Install fails or COM47 won’t appear: Pair the Bluetooth serial device in Settings > Bluetooth & devices, then check Device Manager > Ports (COM & LPT) for “Standard Serial over Bluetooth link.” If missing, remove the paired device, restart Bluetooth/PC, and re-pair; confirm the device exposes an outbound COM port.
• Device not detected: Ensure the Bluetooth device is powered, discoverable, and paired; toggle Bluetooth and run the Bluetooth troubleshooter. In Device Manager, scan for hardware changes and verify no yellow warning on the Bluetooth serial link.
• Version/port conflict: If COM47 is busy or duplicated, uninstall the serial link in Device Manager (do not delete the Bluetooth radio), restart, and let Windows reinstall the Microsoft driver. Roll back/update the Bluetooth adapter driver if pairing issues persist, and reassign the COM port in device properties.