However, sometimes driver updates can also cause problems. Keeping drivers updated is recommended to ensure the connected device works with maximum functionality and without any. Must Read: Fix “MTP USB Device Driver Failed” Problem for Windows 11, 10, 8, 7 Ways to Fix the Prolific PL2303 Driver Error – Windows 11/10 Fix 1 – Roll Back The Prolific USB driver While the exact reason is unknown, you can try the solutions below to fix the issue. In some cases, Windows fails to install the compatible drivers, and you face issues like PL2303 phased-out error. These drivers help Windows read the device and communicate with it. When a device is connected to the computer, Windows automatically installs corresponding drivers. From there just follow the prompts and you should be up and running in moments.Are you facing difficulty with your Prolific USB serial adapter and encountering the PL2303 phased-out error/pl2303hxa phased-out error? Luckily, you are reading the right post that will help fix the issue and will make the yellow exclamation mark disappear.Ī USB-to Serial adapter cable connects your PC to the devices with serial ports, like PLC (Programmable Logic Controller). What you need to do after installing the older drivers is go to the properties for the device in your device manager, go to Update Driver Software, Browse My Computer, then Let Pick from a List and select the older version of the driver and hit next. In my case I didn’t even know I had a knock off but I downloaded the older drivers and installed them and voila, I was up and running!Īnd just another quick tip, since if you’re here you’ve probably already installed the newer drivers and your system will default to those each time you try to plugin the device. With a bit more digging I found out that this was a common error for knock-off Prolific chips as in recent driver versions they have been blocking cloned or pirated chips. However I could not get it working on any of my personal computers or even my work computer.Īfter receiving the same error on each machine I started to think it wasn’t the device nor the computer but the drivers. I recently dug an old PL2303MDL programmer out of a tackle box of electronics and tried to get it working so I could flash some Sonoff devices with tasmota firmware.
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