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ProntoEdit v4 + Win10 + USB to Serial Adapter... can't see COM ports?
This thread has 5 replies. Displaying all posts.
Post 1 made on Wednesday April 6, 2016 at 00:53
Lurking Member
August 2003
Hi all,

My 10yr old WinXP computer bit the dust (only kept it around for the serial port anyways). I bought a Plugable USB Serial Adapter (Prolific PL2303 HD Rev D chip) for my "newer" computer that didn't have a serial port hoping that I could get ProntoEdit working again. I installed ProntoEdit v4 on my Windows 10 machine and managed to update my CCF file. However when I plug in my RU-890 and try to "Upload from RC Device" I get a "RC Device not connected or not responding" - when I click on Details to see a list of available COM ports, it just shows a blank box. I've checked my Device Manager and the USB to Serial is properly installed and showing COM3 - but ProntoEdit doesn't seem to see the COM ports in Windows 10. Has anyone gotten ProntoEdit to work properly in Windows 10 with a USB to Serial Adapter?

Post 2 made on Thursday April 7, 2016 at 15:43
Lyndel McGee
RC Moderator
August 2001
Assuming permissions are correct, see FAQ B3-06 here.

Lyndel McGee
Philips Pronto Addict/Beta Tester
Post 3 made on Monday April 25, 2016 at 13:54
Lurking Member
March 2007
I had a similar problem with my Win10 PC. I had to revert to an older Prolific device driver in order for the device to be recognized. Apparently there are some cloned prolific chip sets that don't always work with the Win10 drivers. I also was not able to use all features of the software such as the emulator or the ability to update IR codes. I set up a VM environment with Win XP to do the editing. Seems to be working.
J Sheldon
Post 4 made on Tuesday May 3, 2016 at 02:34
Lurking Member
February 2014
Salve.. anche io non riesco a vedere il mio philips pronto ru970 ..
Nel mio windows 10 ho installato la versione di prontoEdit 4.0.5.
mi risulta che sia la ultima versione aggiornata..
il problema che non riesco ha trovare la porta com per poterlo collegare...
Il collegamento lo sempre eseguito con il cavo seriale , come facevo sempre con windows 7....
Vi prego consigliatemi che modifiche devo eseguire..
Cordiali Saluti Graziano
Post 5 made on Saturday July 2, 2016 at 10:06
Founding Member
December 2001
Set up a windows XP virtual machine using VMware under Windows 10 and you should be good to go
Post 6 made on Thursday August 18, 2016 at 15:08
Rob Taylor
Lurking Member
June 2002

Just got it to work, so this is what I did. In Windows 10 go to uninstall programmes and uninstall the Prolific driver. Go to the Prolific website and download the latest driver for Windows 10, driver installer 1.14.0.
Make sure the adapter is NOT plugged in. Unzip and install the driver. Plug the adapter in, let it install. At this point go to device manager and check it installed ok ie no yellow triangles. Check the driver version is Check the COM number. Go to port settings, advanced, then change to COM 1. Then you must restart your computer. Plug your old serial cable into the adapter, plug your Pronto in. Open Pronto Edit 4, tap your screen, press the upload icon in Pronto Edit 4 and you should communicate with the Pronto and upload the CCF to Pronto Edit 4. Hope it works for you. My adapter is a UGreen USB to RS-232 DB9 adapter, available from or it has a Prolific PL2303 chipset. Must go I'm watching the Olympics!

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