When you upgrade your older windows system to the latest windows 10 or perform updates directly on windows 10 the prolific usb to serial driver also gets update and if it doesn t work with your old hardware you might have the problem.
Usb to serial adapter windows 10.
Here s how you can do it.
There are a lot of usb to serial adapters available on ebay but many of them do not work on windows 10 because the support for one of the chipsets was removed from the windows 10 code base.
It defines windows runtime classes that can use to communicate with a usb cdc device through a serial port or some abstraction of a serial port.
Follow directions in device manager to download the correct driver.
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So you can try to downgrade your prolific usb to serial driver.
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If there are current windows 10 drivers available for your existing adapter then it should be supported however i suspect you will find that the chipset.
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.
It is optimized for windows 10 windows 8 and windows 7 32 and 64 bit versions but will of course also work perfectly fine with older versions such as vista xp 2000 and 98.