CH340 Usb to serial converter does not work on windows 11 even if I see it OK in device manager

Question

Hello

I'm using a CH340 usb serial converter which is working fine on windows 10 but not in Windows 11, even if it seems ok in device manager. I can not open a com... I have read that it is possible to redirect it to a virtual serial port ot make it running. Which free tool can I use or does a fix exist without redirection ? Thanks for your support

Answer 1

Hi. My name is Ivan, and I am an Independent Assessor. I'd be more than happy to assist you. I'm so sorry that you are experiencing this issue. Don't worry, I'll do everything I can to help you.

It is most likely a driver issue.

Sometimes newer drivers generate some incompatibility, so the best thing to do is try using an older version of driver.

• Go to device manager
• Right-click on the CH340 device
• Select Properties -> Driver -> Roll back driver

You can install it manually by downloading it from the device manufacturer.

for more info.

https://www.youtube.com/watch?app=desktop&v...

NOTE: This is not a Microsoft site, but it appears to provide accurate and reliable information. Be wary of ads that may advertise products that are often classified as PUPs (potentially unwanted products). Research any product advertised on the site before you decide to download and install it.

Answer 2

Great news! I'm glad it worked. Remember that we are always willing to help you. Don't forget to rate the answer if you think I solved your requirement. Have a wonderful rest of the day.

Answer 3

The specs indicate that it supports win10, but no mention of win11?

Answer 4

Version 3.5 of the driver works fine ! Gret! Thanks for the support

Answer 5

OK but what other solution can I use to have serial port on a windows 11 PC ?