Forum Discussion

Copper Contributor

Nov 15, 2021

Solved

PL2303 issues (Prolific USB to Serial Drivers) Win 11

I have come across an issue that I don't if anyone has come across and found a fix? I have a few handheld radios that I need to update the frequencies and when I connect to the USB, it fails to c...

ejohanson
Nov 16, 2021
I tried the older driver available here:
http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=223&pcid=126
And this seemed to work for Windows 11. Weird that an old driver works better than the latest one.
I have the PL-2303 TA chipset.

Brass Contributor

Nov 16, 2021

I have the same problem, and cannot find anything the solves it. The workaround suggested by BHITSSD did not help (I have no "older" versions of the driver installed to select).

charlesyeh522
Copper Contributor
Feb 25, 2022
ejohanson
Please enter prolific's web-site:
http://www.prolific.com.tw/US/supportDownload.aspx?FileType=56&FileID=133&pcid=85&Page=0
Download "PL23XX_Prolific_DriverInstaller_v401.zip" driver.
The v4.0.1 file can fixed your Win11 driver issue.
ejohanson
Brass Contributor
Nov 16, 2021
I tried the older driver available here:
http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=223&pcid=126
And this seemed to work for Windows 11. Weird that an old driver works better than the latest one.
I have the PL-2303 TA chipset.
- cshisav
  Copper Contributor
  Sep 16, 2024
  ejohanson
- ErgoChris
  Copper Contributor
  Aug 14, 2024
  The latest version (v4.0.1) now also worked for me, so no need to get an old version.
  https://www.prolific.com.tw/US/ShowProduct.aspx?p_id=223&pcid=126
  If you previously installed an older version, remove it first in the Windows Installed Apps. (It will have a name that starts "PL").
- Igor_Ivoilov
  Copper Contributor
  Apr 19, 2023
  The old driver is not available anymore. Prolific is fighting with counterfeit which identifies itself as Prolific product PL2303TA, so preserve the old drivers which just works

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