If this is true, you have to downgrade your driver back to an old version.ģ.
The PL2303 driver not working error may result in your latest driver updates doesn’t work well with your hardware. However, updating a driver does not always solve the problem but instead causes some issues. If the driver is corrupted, you can uninstall it and restart the computer to let Windows install a new driver automatically.
Or, you can disable and reenable it in Device Manager. #1 Update USB to Serial Driverįirst of all, the most direct way you should try is to update the outdated or missing driver. Now, let’s see how to fix the Prolific USB to Serial Driver not working issue. If so, mostly, it is the PL2303 driver that has a problem, outdated, damaged, or missing. For example, have you ever encountered an error message saying “ Please install corresponding PL2303 driver to support Windows 11 and further OS” in Device Manager when you try to connect a device to your computer using a USB to Serial adapter? Some issues are related to the PL2303 driver in Windows 11. PL2303 driver Windows 11 is the specific driver to work with the mentioned PL2303 USB to Serial adapter or controller in Windows 11 operating system (OS). It offers a bridge connection with a standard DB 9-pin male serial port connector on one end and a standard Type-A USB plug connector on the other end. The Prolific PL-2303 USB to Serial adapter is your smart and convenient accessory for connecting RS-232 serial devices to your USB-equipped Windows host computer.
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