Why the Bixolon Utility Fails to Discover Printers
The Bixolon Unified POS Utility, Net Configuration Tool, and Label Artist require raw bidirectional communication with the printer controller to update firmware, manage memory switches, and set IP addresses.
When the utility reports "Printer Not Found", "Port Open Failed", or fails to enumerate the device, driver locks, port conflicts, or interface switch settings are blocking access.
Step 1: Release Active Windows Spooler Driver Locks
The Windows standard printer driver holds an exclusive lock on the USB port, blocking utility software from communicating directly with the firmware:
- Pause Windows Print Queue: Open the Windows print queue for your Bixolon printer and select Printer > Pause Printing.
- Ensure queue is empty: Delete any pending or stalled print jobs in the queue window.
- Switch Utility to Windows Driver Mode: In the Bixolon Utility connection dialog, choose Driver instead of Direct USB.
- Select installed driver: Choose your exact Bixolon model from the Windows driver dropdown list and click Open Port.
Step 2: Enable Virtual Serial Port / USB Mode
If direct USB communication fails, configure the Bixolon Virtual COM port driver:
- Download Virtual COM Driver: Install the official Bixolon Virtual COM driver from the Bixolon download portal.
- Check Device Manager: Open Device Manager and expand Ports (COM & LPT).
- Note assigned COM port: Locate Bixolon Virtual COM Port and note the assigned port number (e.g.,
COM3). - Select Serial in Utility: In the utility interface, select Serial (COM), set the port to
COM3, and baud rate to115200. - Connect: Click Check Status to establish a connection.
Step 3: Temporarily Disable Windows Firewall (Network Models)
For Ethernet and Wi-Fi models, the Net Configuration Tool broadcasts UDP discovery packets that software firewalls block:
- Open Windows Defender Firewall: Open Windows Security > Firewall & network protection.
- Allow Bixolon Net Tool: Click Allow an app through firewall and ensure Bixolon Net Configuration Tool is checked for both Private and Public networks.
- Direct IP discovery: If broadcast discovery fails, type the printer's specific static IP address directly into the manual search box.
Frequently Asked Questions
Why does the utility say "Port Open Failed" when connecting via USB?
The Windows Print Spooler service is holding the USB handle; stop the Print Spooler or connect through the Windows Driver interface mode.
Can I run the Bixolon Utility on Mac or Linux?
Bixolon Utilities are native Windows applications; Mac and Linux users can configure network printers via the web browser interface.
What is the default serial baud rate for Bixolon receipt printers?
The default factory baud rate for Bixolon serial interfaces is 9600 or 115200 bps with 8 data bits and no parity.


