Recommended Resolution. Reinstall the device driver manually. From Start, search for device manager and select Device Manager from the results. Right-click the device in the list. Select Uninstall from the menu that appears. After the device is uninstalled, choose Action on the menu bar. Select Scan for hardware changes to reinstall the driver. Note You may be prompted to provide the path. Select Update Driver. If Windows doesn't find a new driver, you can try looking for one on the device manufacturer's website and follow their instructions. Reinstall the device driver. In the search box on the taskbar, enter device manager, then select Device Manager. Right-click (or press and hold) the name of the device, and select Uninstall.

Dec 21, 2020 • Filed to: USB Recovery • Proven solutions

Have you ever had difficulty connecting your devices to your computer using a Prolific USB to Serial adapter? If yes you are lucky to find this page, it will give you all the information need to fix an unresponsive Serial driver adapter. You may have noticed a yellow exclamation mark hovering over or beside the USB to Serial Driver when searching your Device Manager and if you have we can all agree that it signifies a prevailing problem.

Overview of the Error

If you are not able to connect your device to your PC using a USB to Serial adapter it may be that

• The USB driver is outdated
• The USB Driver is missing
• Or even a corrupted driver

While you can't be so sure what the exact problem is there are solutions you can adopt to fix the issue once and for all. Read on to find quick fixes to resolve the problem.

1# Fix Prolific USB to Serial Driver not Working

Solution: Roll your Prolific USB to Serial Driver back to an older version

Updating your drivers often work wonders for your system because it makes sure that it runs on the latest features that guarantee maximum functionality. Unfortunately updating your drivers can cause this kind of error especially if your latest update does not work too well with your hardware. Once you upgrade your PC to the latest Windows version your Prolific USB to Serial Driver also updates to the latest driver software and if the driver is not compatible with your Hardware issues may arise. To correct the error, you will have to download the driver again by following these steps.

• Right-click on your PC Start button and open Device Manager

• Double click LPT and COM ports then locate the Prolific USB to Serial Driver and right-click it so you can select Update Driver

• For driver software click My computer

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• From My computer select 'Let me pick from a list of drivers available'

• Choose an older version from the list then click Next

• The driver you selected will be installed automatically
• Once it has been downloaded reconnect the driver to see if it works.

2# Fix Prolific USB to Serial Driver 'Coder 10'

Driver issues reveal themselves in so many ways or through messages such as

• This device will not start (Code 10)
• There is no driver installed in this device
• The driver was not successfully installed

A code 10 error may arise because the chip you are using is not an original one. If you are using a fake, the manufacturer has a way of disabling it due to copy write infringement and the copy write takes effect once you download a recent update. To protect your PC from getting this code, you will have to make sure that your Windows 10 never updates a driver without approval. Updates come in the form of 64 bit and 32-bit drivers. Below we will show you how to work your way around the problem.

Window 64 bit Fix

To fix Windows 64 bit OS including Prolific USB to Serial Adapter, follow through these steps.

• Download 'PL2303_64bit_Installer.exe and Save
• Remove every USB to Serial adapter from your PC and double click the 'PL2303_64bit_installer.exe
• Follow the prompt by plugging in one USB to Serial adapter the click on Continue
• Reboot your PC to get Windows up and running

If you have followed these process through and you still see the same error go to your device manager

• Open the control panel and navigate to Device Manager
• From your control panel navigate to the System category and click the Hardware tab
• Scroll to the LPT/COM port and double click Prolific USB to Serial Comm Port
• Click Drivers in the Properties section
• The Driver you choose should read '3.3.2.102 with an appropriate date attached
• If the date is wrong then it means the wrong driver was installed
• Unplug the Serial adapter and run the steps again to install the correct driver

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Window 32-bit

For Windows 32-bit OS systems follow these steps

• You will have to download the 'PL-2303_Driver_Installer.exe and save from Microsoft download link
• Run the program and eradicate the driver if you can
• Run the installer once more to install a correct driver

To Troubleshoot for error if your device still does not work

• Go to Control panel, enter System to access your Device Manager
• Scroll down to the LPT/ COM port then double click Prolific USB to Serial Comm Port
• Click Driver in the Windows Properties section
• The driver must be numbered as '2.0.2.8' and dates accordingly

If the driver was not installed, remove the Serial adapter then run 'PL2303_Driver_Installer.exe' again. Follow directions in Device Manager to download the correct driver

The three solutions listed in this article have proven to be quite helpful in fixing a Prolific USB to Serial driver not working on Windows 10. They may appear confusing at first but if you follow each step in detail you can resolve the issue.

Video Tutorial on How to Fix USB Device Not Recognized

USB Solution

Recover USB Drive

Format USB Drive

Fix/Repair USB Drive

Know USB Drive

USB Device Share lets you share USB devices and access them remotely over network (LAN or internet). Using this software, USB devices connected to remote computers can be accessed as if they are locally plugged in. Applications which work with the device can then be run without the device being locally present. USBDeviceShare supports only Windows operating systems.

Access USB devices over Network Share USB devices and access them remotely over IP Remotely access USB Devices Access USB devices remotely. Run applications which work with devices remotely. Share unlimited devices ! ($99 only) Unlimited number of devices can be shared and remotely accessed using registered/full version. Supports all types of USB Devices Share all types of USB devices - storage, HID, audio/video, dongles, card readers, vendor specific devices etc. Software based solution, fast & stable Share USB devices using software technology. No additional hardware required. USB 3.0 Support / Windows 8 Support Supports USB 3.0 (Super Speed) as well as the latest version of Windows Supports Virtual Machines Supports sharing devices from VM Host to Guest

USB Device Share is a USB over Ethernet / USB over Network software. It is a 100% software solution to access USB over network (USB over IP). USBDeviceShare supports all types of USB devices : USB 1.x, 2.0 and 3.0 devices (low, full, high & super speed).
Please note that a USB device shared at server can be accessed only by a single remote client at a time. Simultaneous (concurrent) access to the shared device from multiple clients is not supported. This is a limitation of USB bus and not of USBDeviceShare. (See Auto Connect feature of Client)
Supports all versions of Windows operating system. Supports both 32 bit and 64 bit Windows Editions.
(Windows 2000, Windows XP, Windows 2003 / 2008 Server, Windows Vista, Windows 7 & Windows 8 beta)

See who all are using USBDeviceShare USB over network software: Featured Customer List

We offer 15 days money back guarantee for USBDeviceShare, Free support and Free upgrades for 1 year. Contact us at support@sysnucleus.com.

USBDeviceShare in Action

We recommend that you download and try the free evaluation copy of USBDeviceShare to learn more about the features.

Download USBDeviceShare Download and try the 15 days free evaluation version: Download USBDeviceShare

USBDeviceShare Manual View the online help manual to learn more about the features: View Help Manual

Product Datasheet Download USBDeviceShare product datasheet (pdf document): Download Datasheet

Key Benefits and Features

Access USB devices from anywhere With USBDeviceShare you can connect to your USB devices remotely over network/internet. This helps to access devices which are not easily portable. Your device which is physically present at your home or office is safe and secure. Save cost, Share expensive devices Share expensive USB devices with members in your organization. No need to purchase additional hardware. Use USBDeviceShare to share devices over network and cut down expenses. Supports all types of USB devices All types of USB devices like scanners, printers, communication devices, storage devices, human interface devices, video, audio, vendor specific devices etc. can be shared and accessed. Easy to use and stable We have tested USBDeviceShare with a variety of USB devices with a wide range of bandwidth requirements. We offer USB Device Share as an easy-to-use as well as stable solution to access remote USB devices.

Automatic sharing of devices (Know More) Devices can be set up to be automatically shared as soon as they are plugged in or during server startup. There is also an option to share all newly plugged in devices. Deny sharing for selected devices To prevent users from accidentally sharing a device which should not be shared (for example the system's primary USB mouse or keyboard), the 'Deny sharing for this device' feature can be used. IP Filters (Know More) IP Filters can be used to block or allow only selected clients in the network from connecting to USBDeviceShare server. Supports callback connections (Know More) USB Device Share Client supports callback connections from the server. This feature is useful when the server is behind a router or firewall and cannot accept incoming connections. Supports USB 3.0 (Super Speed USB) USB 3.0 (Super Speed USB) devices can be shared and remotely accessed using USBDeviceShare.

How to use ?

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1. Install USBDeviceShare-Server where devices are present.
   Install USBDeviceShare Server where devices are physically present and where they need to be shared. Shared devices can be accessed remotely over network using USBDeviceShare Client. Server User Guide
   

2. Install USBDeviceShare-Client where devices need to be remotely accessed.
   USBDeviceShare Client is used to connect to USBDeviceShare Server and remotely plug-in the shared devices. Client User Guide

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