The “Driver Version” must say “3. Close the Sirf Demo software. In the Properties Window, Click on “Driver”. Or you may get no error at all, but your device will still not work. And it addresses issue of: It allow to inhibit the auto-update for a particular program or driver Prolific in our case.

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Here is the driver with the solution!! Reply Did this solve your problem?

PL2303HX Rev. D USB to Serial/UART Bridge Controller (Internal Crystal)

Connect your device, choose the correct COM port, pl 203 usb to serial select the baud rate. Issue will also may show messages like this: Home Contact Support Knowledgebase Downloads. Or you may get 230 error at all, but your device will still not work. So no matter how many times you remove the driver files and reboot – the next time you insert the USB-To-Serial adapter, Windows installs the newest non-working version again.

PROLIFIC USB-TO-SERIAL COMM PORT WINDOWS 10 – Microsoft Community

How do I fix it? The “Driver Version” must say “3. StanP12 replied on December 16, Below installer program will remove all of the incompatible drivers — make a change so that Windows can never update the driver without your approval — and install the Version 3.

Tell us pl 203 usb to serial your experience with our site. If your adapter was pl 203 usb to serial prior to going to Windows Update, you can “roll back” to the previous installed driver and all will be well once again.

So, if you change place of connection, you should manually set the driver to 3. And if you double-click on it, you will see: Prolific also prohibits the distribution of any PL drivers including download links without written permission from Prolific.

OmarGimenez replied on November 22, Ysb time, the driver remain to 3. On the next windows, choose the second option “Look for a driver on my computer”. There is lot’s of people reporting problems with W10 and Prolific devices based on popular PL adapter.

The only problem with it, is that, it reload the latest driver when you plug the device on a never used USB port. It don’t care, because the old version is now available in the list, serizl you can proceed as mentioned above.

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USB Serial Adapter Drivers Page

If you don’t have the old versions of drivers, you can tried to install them from the minidisc provided with your product. This tool is for profs. Indeed, when installing W10, the device driver for PL is the latest version.

And Windows 8, 8. I prefer not to block all updates.

RobbieAitkenhead replied on December 10, This article was helpful. And it addresses issue of: Only bit driver I have ever found that works with all the “Prolific” adapters is Version 3.

Once manually set, the device driver remain in the 3. May be, a solution will be to use the old W7 drivers version into W Type troubleshooting in the search bar, click on troubleshooting. Then run the installer again to install the correct driver.