Forum Discussion
PL2303 issues (Prolific USB to Serial Drivers) Win 11
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.
There is a working driver at http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41, a bit down the page listed as "DCHU (for PC Vendors)". Getting it installed is a bit tricky, it seems. What I did is this:
First install the downloaded driver by unpacking the zip file and "pnputil /add-driver *.inf /subdirs /install" (the /install is probably not necessary) from the extracted "Win11_DCHU" directory. It will add the two driver packages to the driver store and tell you what oemXY.inf files it has assigned to them.
Then "pnputil /enum-drivers", and in the output look for Prolific drivers other than the ones from the previous step. I had only one other entry, a "ser2pl.inf" version "09/16/2021 3.8.40.0".
Disconnect the device, and "pnputil /delete-driver oemXY.inf" with the INF file you located in the previous step.
Connect the device again, and it should work, at least, it does for me. The problem is probably that the non-working driver is the newest (September 2021 vs. July for the ones from the download page) and so Windows prefers it over them.
chrullrich Yes is there a way from the new prolific driver from reinstalling itself at every update? Do you know of a way that it doesnt keep going to the new PL driver?
scco1999 There is a way to block updates, but I haven't tried it yet.
