Standard Serial over Bluetooth link (COM8) Driver

The Standard Serial over Bluetooth link (COM8) driver lets Windows present a compatible Bluetooth serial connection as a virtual COM port, allowing applications to communicate with paired devices. Provided by Microsoft, it is useful for users connecting Bluetooth equipment that relies on serial communication, such as certain scanners, instruments, or adapters.

Key Features

• Virtual serial communication: Allows software that uses serial ports to exchange data with compatible Bluetooth devices through the Bluetooth Serial Port Profile (SPP).
• Windows integration: Works with the Windows Bluetooth stack to support serial connections without a physical serial cable.
• COM-port access: Makes the connection available as COM8 when Windows assigns that port number. The assigned number may differ after pairing again or on another computer.
• Legacy Windows support: This listing covers Windows 10, 8.1, 7, Vista, and XP. Availability and setup depend on the Bluetooth adapter, its drivers, and the connected device.

How to Install Standard Serial over Bluetooth link (COM8) Driver

1. Check your connection and system. Confirm your Windows version, enable Bluetooth, and ensure your device supports Bluetooth serial communication. For Windows 10/11 systems, use the driver intended for your specific OS; this listing does not establish Windows 11 compatibility.
2. Pair the Bluetooth device. Open Windows Bluetooth settings and follow the pairing instructions. Windows may automatically install the necessary Microsoft serial-port component once the appropriate Bluetooth service is available.
3. Inspect Device Manager. Expand “Ports (COM & LPT)” and look for “Standard Serial over Bluetooth link (COM8).” If it is missing, check the paired device’s serial-port service and the Bluetooth adapter’s driver status.
4. Choose a trusted update source. Before proceeding with a Standard Serial over Bluetooth link (COM8) driver download for Windows, try Windows Update or Device Manager’s update option. This Microsoft component is generally supplied through Windows rather than a separate installer; avoid unfamiliar packages advertised as a free download.
5. Test the connection. Restart if prompted, then select COM8 in your serial application. Match any communication settings required by the device. If Windows assigned another port, use that number instead.

Keep the Bluetooth adapter driver and Windows components updated to help maintain reliable connections. The latest version should be one compatible with your operating system and hardware—not simply the newest package available. If communication stops working after an update, check pairing, port assignment, and application settings before reinstalling drivers.

Common Issues and Fixes

• COM8 not detected: Confirm the Bluetooth device is paired and supports Serial Port Profile (SPP). Check Bluetooth settings > More Bluetooth options > COM Ports for an incoming/outgoing port. If missing, remove the device and re-pair.
• Install/start fails (Code 10/28): This driver is built into Windows; avoid forcing a third-party INF. Update Windows, then in Device Manager uninstall “Standard Serial over Bluetooth link,” reboot, and re-pair the device.
• Port busy or version conflict: Close any app using COM8, remove duplicate/stale Bluetooth COM ports, and let Windows reassign. If conflicts persist, delete the device and re-add it, then select the correct COM port in your application.