Prolific USB to serial Driver Windows 7 SOLVED (with partial fix for windows 8)

(I was getting CODE 10 in device manager- you may be having different problems… give this a go)

I own a Garmin Geko 201 GPS, and I am also running Win7 x64

The default driver that windows suggests I download whenever I use its data cable (which has an inbuilt Prolific USB to serial conversion chip) does not work. It gives an error “This device cannot start. (Code 10)”

The solution after wading through many forums and reading mostly useless advice was to install the Vista driver. Ignore any warning messages dont use compatibility mode. Then also check in the device manager that its not set to a com port that is in conflict with something else via its properties tab.

This solved my problem, as well as many other peoples problems from what I could see.

This chip is often used in cheap cables that connect HAM and HF radios and other devices such as Nokia phones to a PC. The tried and true solution from what I could tell seemed to be to install a Virtual Machine and run XP. So if this driver does not work, then perhaps that may be the solution for you. I’d suggest installing Virtual box as its free and opensource though others used VMWare (I have successfully used Virtual Box to solve a similar COM port issue with diagnostic software on Komatsu trucks though the crap software required Win 98 not XP).

However if you wish to give the driver a go you can find the link for its download here :


The forum post where I found the information :


Let me know if it works, though I cannot provide support if it does not.

UPDATE: one of the commentors found a different driver worked better on windows 8

Here is a link to the latest driver, wanted to get it running on windows 8. http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41 but it seems some chipset versions are not supported anymore in windows 8. Driver is suppose to work for windows vista,7 and 8

I would force the  listed vista drivers first, failing that try the prolific drivers as mentioned above. But Please Share your success, I do not have the cable anymore, so I as usual cannot comment or help any more than this.



I recently encountered this problem again in a HAM radio programming cable. I knew what to do but found this additional site which has PICTURES in its description of what to do. Blows me away that prolific hasn’t fixed this after all these years.  Unless these chips are clones ? ? Meh in any event works fine. I know the links are for a HAM radio but if your doing anything with a prolific chip give this a whirl.



thank you very much bro.. this driver solve my problem for almost 2 years, i used win7 x64 on acer 4745g.

April 1, 2012 at 10:54 pm aleks reply

[…] Prolific USB to serial Driver Windows 7 SOLVED […]

April 6, 2012 at 11:26 pm Prolific USB to serial driver: risolvere codice 10 su Windows 7 « Grafinforma3D reply

Thank you very much, i got rid of a headache

April 18, 2012 at 9:00 pm Ivan reply

thanks a lot.this driver solved my problem.

June 22, 2012 at 6:48 pm Kiran Harile reply

Great It worked :) I instaled the Vistad driver in the above link.Thanks a lot :) i was using windows 7 64bits

June 26, 2012 at 9:05 am HcS reply

Awesome…you Rock dude…!

take care

June 28, 2012 at 1:48 am Jeet reply

Thank you

August 30, 2012 at 10:48 pm pippo reply

Thank you this saved my day ! Just got a new Win/ laptop and was fearing I have to buy new cables for all my ham radio gear ! :)

September 15, 2012 at 4:33 pm Geoffrey reply

I have a dongle with 2 relays i wish to remotely control . It is detected as a prolific USB to serial and com 10. I want to send over the internet commands to operate the relays. Any ideas- software?

August 9, 2013 at 1:57 am NE6Y reply

someone to resend (the drivers ) the same to me. plizzzz

September 16, 2012 at 9:03 pm SIGEI PIUS reply

Hi Thank you this solved my problem

September 29, 2012 at 1:07 am S MAHESH reply

I know this post is a little old, but this works like a charm. thanks

October 5, 2012 at 6:09 am Paul reply

I also agree alex. This driver solved my problem of prolific usb-serial connector.

October 8, 2012 at 7:53 pm brk reply

FANTASTIC!!! Thank You!!!! Works perfect. Make sure you first uninstall COMPLETELY any PL Serial to COM drivers first or it may happen again. Use an uninstall program like Revo uninstaller so that you are sure to remove registry entries. When attaching cable and installing disconnect from the internet so that Windows 7 does not try and grab another driver online.

November 27, 2012 at 5:36 pm LawMed reply

thanks very much. windows 7 32 bit problem solved: error 10

December 14, 2012 at 10:57 pm magno reply

thank you so much, it’s work :)

December 21, 2012 at 5:24 pm hengki reply

Work Great….Thank You very much!!!!

March 2, 2013 at 2:36 am Claudio reply

Solved the “Cannot start” Code 10 issue for me on W7 Pro x64. Thanks for taking the time to post this.

April 12, 2013 at 9:54 pm Hieronymus P. Organthruster reply

Thank you very much dude…. Problem solved….

April 16, 2013 at 4:55 pm Hareesh reply

Thank you sooo much!! It worked on mine too!

April 30, 2013 at 9:29 am Eduard reply

It`s Work with WIN7 64 bit, thanks many thanks :)

May 2, 2013 at 11:21 pm Lyubomir Marchev reply

Thank you! Screwed around with a USB radio programming cable for over an hour before stumbling on your site. Works now.

May 6, 2013 at 1:50 pm Dan S. reply

Semi-Solved the problem on 7×64

Installed it, scanned for hardware changes. It installed a driver that failed, then I went through Pick a Driver from my local ones and set it back to the Prolific and it worked. Now to test it and hope it works beyond just driver functionality.

May 7, 2013 at 11:16 am Bobbert reply

thanks so much dude!

May 8, 2013 at 10:19 am my bro reply

Thanks, and to Bobbert.

I also had to pick a driver:
1) Right click on Prolific entry in device manager, and Update driver software
2) Browse my comp for driver software
3) Let me pick from a list…

That listed two compatible drivers: [31/07/2007] and [05/02/2013] (this one doesn’t work on Win7 x64 it seems)

I also had to re-assign the COM port, since it was trying to use one already in use:
1) Right click again and select properties (on device in device manager)
2) Port Settings Tab and click on Advanced to change port.


May 16, 2013 at 10:45 pm Nickw reply

Thanks man! That was what I was missing!

June 22, 2013 at 3:52 am Eddie reply

tnx man ur da best!

September 11, 2013 at 9:09 pm dv0rak reply

Thanks mate, followed your step, it worked immediately. You saved my day.

October 12, 2013 at 10:31 pm nazir reply

Ok, I’m trying to do so, but my WIN7 won’t alow me to… When i click on the driver it says – A service installation section in this INF is invalid. Any help please?

November 2, 2013 at 3:37 am Jure reply

Thanks…. This worked!

July 22, 2014 at 4:56 am Luis reply

Thank you!!!! this solved my problem!!!

May 30, 2013 at 3:05 am ser reply

Thanks a lot mate …would have been in complete mess without your help

May 31, 2013 at 4:59 am Rahil reply

Thanks a lot…

June 16, 2013 at 5:37 am Anvesh reply

Thanks dude this driver worked for me also – Win 7 Ultimate 64

June 26, 2013 at 2:53 am SAM reply

I have been troubleshooting for few hours and finally has gotten this work with the driver you have recommended.

Thanks a lot.

June 26, 2013 at 1:57 pm Ting Wee reply


July 5, 2013 at 5:25 am david reply

Thanks. This driver really work on Win7 SP1 standard. Thanks a lot.

July 5, 2013 at 8:59 am MC reply

Thank u, Thank u, Thankkkkkkkkkkkkkkk u

July 8, 2013 at 2:50 am Elston reply

Thanks a lot, it works try another USB Port

July 29, 2013 at 5:38 pm Ones Santana reply

thankyou….. wasted 5 hrs. to search for a prolific usb-to-serial driver windows 7 on my acer travelmate 4740, but even googling was all in vain.. but finally after using the driver linked in this page, my prolific device became free of error: code 10

thank you!!

August 17, 2013 at 5:11 am vivek kanchan khalkho reply

thank you so much this worked after so much frustration. win 7 home.

August 24, 2013 at 9:33 am anon reply


August 24, 2013 at 11:05 am Alberto reply

Worked for me on Win 7 32 and 64 bit systems… Thanks!

August 29, 2013 at 10:02 am Bob reply

Thanks dude…

August 31, 2013 at 5:10 pm Madhu reply

graciaas por tu ayuda

September 14, 2013 at 5:26 am orlando reply

I am so amazed and very grateful for the techs who, not only find solutions to every issue, but who take the time to post their solutions on the Internet for the millions of us out here facing the same problem! I still have the original drivers disk that was shipped with my cable, but the cd cracked, so I tried many other drivers that did not work. The Vista drivers that you offered worked perfectly!

September 15, 2013 at 6:33 am Matt reply

Here is a link to the latest driver, wanted to get it running on windows 8.
but it seems some chipset versions are not supported anymore in windows 8. Driver is suppose to work for windows vista,7 and 8

September 19, 2013 at 5:30 am Kobus Pelser reply

Thanks!!! Latest Profilic drivers from vendor web page are not working on Windows 7, but this driver works grate.

September 21, 2013 at 12:41 am Martin reply

thanks mate ..

September 27, 2013 at 2:58 pm manu reply

thanks mate. finally after a day’s worth of searching landed on this final solution.

September 30, 2013 at 8:36 pm sid reply

Definitely a lifesaver! Thanks for the information and for the Vista driver on Windows 7 x64! A headache I don’t wish upon anyone…

November 4, 2013 at 11:36 am ThankfulCanadian reply

thanks man

November 7, 2013 at 12:20 am AP reply

mantep mamen….

absolulty right……

November 14, 2013 at 1:42 pm cacan reply

Thanks. I’ve been pulling my hair out all afternoon. Works great!

November 18, 2013 at 9:03 am Clinton reply

thanks veru much

November 23, 2013 at 6:34 pm sangram reply

Lithuania say thanks !!!! :D

November 29, 2013 at 3:35 am raimis reply


December 3, 2013 at 10:36 pm Dzsó reply

thanks so much after so many advice seen different forums…did the magi

December 5, 2013 at 2:59 am ade reply

Thanks dude, it works. Not mentioned on the Profilic website that this solves the driver problem with Win7 (64bit) It’s a bullshit from Profilic.

December 13, 2013 at 9:50 pm Ben reply

Thanks a lot.. solved the issue.. :)

December 24, 2013 at 5:55 pm Suryakant reply

Thank you! This worked fine on my Windows 7 laptop. As other commenters have noted, after installation, I had to pick the right version – dated 2007 July 31. If you don’t do this, it won’t work. Ports (COM&LPT) > Prolific XXX > Properties > Driver > Update Driver > Browse my Computer > Let me pick … and then choose

December 26, 2013 at 4:10 am Sankar KV reply

My adapter is a Gearhead Ca2050 (made in China) bought from Frys. Neither the driver version from disk that came with it or the Windows Update version (same as from prolific site) worked on my win7 32/64 machine. Had to use the pick driver solution posted above by NickW. The newest compatability driver was a no go but the and the from 2008 worked.. By using the checkchip utility from Prolifics driver package it seems that the chip are likely candidates for being counterfeit discussed per their download page.. Either such is rampant or prolific is full of it and can’t produce a driver that’ll work with a variety of machines.

December 28, 2013 at 9:49 pm Kevin reply

Excellent solution, may be the only thing useful from windows Vista :)
I hope the company would have cared enough to fix this problem.

Many thanks for sharing the driver.

January 4, 2014 at 12:52 pm Mikel reply

cheers worked for me too i uninstalled the driver and deleted file via device manager, downloaded and ran the vista drivers, unplugged and plugged back in my usb-serial lead and when windows started looking for drivers on the internet i pressed cancel and it cancelled then told me the device was ready to use without any further mucking about or having to source driver removal software…..top marks ;-)

January 9, 2014 at 7:36 am craig reply

I tried the Vista driver but i still can’t get any results , my cable is being recognised as Unknown device.Can anyone help…?

January 10, 2014 at 7:15 pm Nikos reply

Thanks a lot dude for this post. It really saved me from a headache and worked marvelously on Windows 7.

January 15, 2014 at 6:07 pm sheilesh reply

Yay! It solved my problem! Thank you so much!!! :)

January 17, 2014 at 5:43 am JK reply

Dude you are superstar , i had trouble with it for last 3 years. Running win7 64

January 30, 2014 at 2:35 am Vasya reply

perfect fix! was about to toss stuff out the window…Thanks so much…

February 4, 2014 at 8:40 am chuck reply

Thank you for sharing this stuff

February 12, 2014 at 3:02 pm Danny reply

Tank you!!!

February 18, 2014 at 2:16 am WRC reply

Thank ;)

February 18, 2014 at 2:17 am WRC reply

Thanks a bunch buddy for this post. Was breaking my head to get my foot pedal connected using this cable. You’ve been a great help. Thanks again.

February 27, 2014 at 5:24 pm John Paul reply


February 28, 2014 at 12:20 am igor reply

Thank You²

April 2, 2014 at 6:37 pm claas reply

Thanks so much. It worked!

April 29, 2014 at 12:03 pm mike reply

Prolific USB to RS232 worked perfectly on Win7 x64 after downloading the driver from your cooldriver link above and uninstalling whatever I had on the PC that didnt work. Once uninstalled, installed the new driver and didnt even needed a reboot.
Thanks very much.

May 2, 2014 at 8:55 am Sean Stevens reply

Thank you very much for the post, this helped me too on Windows 7 64-bit. Strange how the official Prolific drivers don’t work!

May 6, 2014 at 6:45 pm Mital reply

Brilliant. Worked first time after struggling with all other useless solutions. Am running W7 64-bit
Weird though; why can’t these people get things right?

May 26, 2014 at 7:58 pm Peter reply

Thank u very much sir! I got rid of my big head ache today.

May 30, 2014 at 4:55 am Lohith reply

thank you verrrrrrrrrrrrrrrrrrrrrrrrrrrrrrry muchhhhhhhhhhhhhhhhhhhh

June 5, 2014 at 10:48 pm abdo alghareeb reply

i love youuuuu,
thanksss a lottttttttttttttt

June 14, 2014 at 4:51 am mahmoooood reply

Thanks a lot. It worked!

July 8, 2014 at 6:53 am Roberto reply

this solution still valid. thank you

July 8, 2014 at 10:11 pm Scotchie reply

It’s good y goody. I was struggling with at LogiLink USB-to-Serial-Converter (AU002B) on Win7 x64.
Thanx for sharing the good shite!

July 9, 2014 at 10:32 pm Terje K reply

Thanks a lot! You saved my day!

July 26, 2014 at 8:49 pm Spyros A reply

What a relief!!!!!!!!!!!!!!!!!!! After days of searching. Your are GREAT!

July 29, 2014 at 12:52 am Innocent reply


August 8, 2014 at 7:39 pm tyu reply

Much thanks. After installing the above drivers I still got the code 10 error and chose another driver for the device in Device manager.
Device>Properties>Driver Tab>Update Driver>Browse My Computer…>Let me pick from list…>select older version (for Vista). Perhaps I needed to uninstall reboot laptop and reinstall vista driver first, not sure. Nonetheless, I thought the info might help someone else if they came across this problem too.

Ref: https://www.youtube.com/watch?v=-8cojWp8qY0

August 17, 2014 at 7:14 am Ernest C reply

become my wavecom modem to work better on vista and win 7 x32 for my sms gateway software

August 23, 2014 at 9:06 pm anwari reply

Si funciona instalar el driver para Win Vista aunque estes en Win 7


September 9, 2014 at 1:02 pm Raul reply

When I select the driver it says – A service installation section in this INF is invalid. Anybody can help?

September 29, 2014 at 5:33 pm Kevin reply

Thanks a lot man !! i was struggling with this for more than 3 hours !! i used the vista driver and it worked !! thank you very much.

October 3, 2014 at 3:23 pm sarath reply

Thanks Man..it’s Really Work’s

November 7, 2014 at 4:57 pm raaj reply


January 29, 2015 at 8:32 am Jaroslaw W reply

worked perfect for Windows 8, thanks a lot

January 31, 2015 at 7:12 am Juergen reply
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