If the printer is already plugged in, unplug it.
Windows 10 blocks unsigned drivers by default (especially for older POS devices). pos-5890t driver windows 10
You can use "Zjiang" or "Xprinter" 58mm drivers, which are widely compatible with the 5890T hardware. 3. Step-by-Step Installation on Windows 10 If the printer is already plugged in, unplug it