What Is PL2303 Driver Windows 11?
PL2303 Driver Windows 11 Not Working
Some issues are related to the PL2303 driver in Windows 11.
Now, lets see how to fix the Prolific USB to Serial Driver not working issue.

Or, you’re free to disable and reenable it in machine Manager.
The PL2303 driver not working error may result in your latest driver updates doesnt work well with your hardware.
If this is true, you have to downgrade your driver back to an old version.

UnfoldPorts (COM & LPT)section.
FindProlific USB to Serial Comm Port, right-hit it, and selectProperties.
In the Properties window, go to theDrivertab, and click onRoll Back Driver.

It will prompt asking for the reason.
Just pick one reason and clickYes.
Finally, the correct driver will install itself.
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When it finishes successfully, just venture to connect your machine again.
It should work now.
The manufacturer will disable it.
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For a solution, just follow the below guide.
Download PL2303 Driver for Windows 11
It mentioned downloading the PL-2303 driver in the above solution.
What are the other solutions to deal with the problem?
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