Better handling of USB-to-Serial emulation, ensuring the printer doesn't "disappear" after a reboot.
Go to Printer Properties > Ports and ensure it is assigned to a USB00X port, not a generic virtual serial port. If the issue persists, completely uninstall the driver, restart the PC, and reinstall V8.03 making sure to explicitly choose POS-58 or POS-80 matching your hardware. Symptom 3: The printer worked yesterday, but stopped today. Pos Printer Driver V8.03
Look for a checked port. If it is set to COM1 or LPT1 by default but you are using a USB cable, scroll down and check the box for (or USB002 , USB003 depending on how many USB devices you have connected). Symptom 3: The printer worked yesterday, but stopped today
The driver supports diverse connectivity options, including USB, Serial (COM), Ethernet (Network), and Bluetooth. The driver supports diverse connectivity options
POS Printer Driver V8.03 is a standard, widely distributed utility driver designed for ESC/POS compatible thermal receipt printers. ESC/POS is a proprietary command system created by Epson that has become the universal language for almost all receipt printers worldwide.