I'm am having issues with my USBasp programmer (Windows 10). I installed the WinUSB driver using zadig 2.4.

When I run AVR dude with the following parameters

avrdude -c USBasp -p m32u4 -u -U flash:w:justahex.ino.hex:i

It immediately returns with this error:

avrdude: error: could not find USB device with vid=0x16c0 pid=0x5dc vendor='www.fischl.de' product='USBasp'

It looks for a USB device with vendor ID "0x16c0" and product ID "0x5dc". This is the correct set of IDs according to Zadig:

enter image description here

Also the device manager seems to find the device without issues:

USB asp correctly installed

Again with correct vendor/product ID

When I google the topic I see a lot of forums where people have issues getting their USBasp device working under windows 10. But they mostly are having issues with the libusb /WinUSB drivers (Which seems to be fine in my case thanks to the Zadig tool).

So I find myself stuck in getting further. Are there any other things I can check? Or is the device broken somehow (which would surprise me as it does get installed properly in windows)

  • \$\begingroup\$ I had the same problem and I couldn't use it. Finally, I decided to buy and AvrPocket which works fine. If you find a solution please let me know. \$\endgroup\$
    – pantarhei
    Jan 13, 2019 at 9:50
  • \$\begingroup\$ My guess is that windows disallows avrdude from accessing the USB device. What happens if you run avrdude with administrator priviledges? \$\endgroup\$
    – jms
    Jan 13, 2019 at 10:45
  • \$\begingroup\$ @jms Nope that does not make a difference. Good guess though! Haven't thought of that myself. \$\endgroup\$
    – bas
    Jan 13, 2019 at 12:36
  • 1
    \$\begingroup\$ @BaciuVlad-Eusebiu found the fix for my problem. See answer below. Worth trying out :). \$\endgroup\$
    – bas
    Jan 17, 2019 at 19:02

3 Answers 3


I'm a bit late to the game, but I just experienced the same error (albeit with different causes).

  • on most places on the internet you will be instructed to install the libusbK driver, which doesn't work, use the libusb-win32 variant instead
  • make sure the AVRDUDE.EXE tool is the latest version (the older doesn't work with the newer USB drivers for some reason)
  • in case of using a clone (for instance having "Van Ooijen's technische informatica" as vendor id instead of the original name "www.fischl.de"), make sure to use the -c usbasp-clone -P usb AVRDUDE settings instead of -c usbap -P usb. The clone setting causes AVRDUDE to ignore the vendor description and also accept the clone. You'd think having the correct VID, PID combination would be sufficient but no...

Bonus: for the extra lazy ones, here's an example command line that would flash that Arduino Leonardo board from Atmel studio (warning, this will overwrite the bootloader):

avrdude.exe -C"avrdude.conf" -p atmega32u4 -c usbasp-clone -P usb -U flash:w:"$(ProjectDir)Debug\$(TargetName).hex":i

  • \$\begingroup\$ I will mark your post as answer since it is clearly more up to date then my answer \$\endgroup\$
    – bas
    Aug 11, 2020 at 16:20

Found the solution, which is of course dead simple once you know...

In Zadig, you can select the driver. Default selected is (in my case) the WinUSB driver. When I select the libusb driver, and install that driver, it works like a charm.


enter image description here

avrdude -vvv -c USBasp -p m32u4 -u -U flash:w:Duroduino.ino.hex:i

avrdude: Version 6.3, compiled on Feb 17 2016 at 09:25:53
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "c:\_SVN\p(r)ins\Durocan\Deployment\avrdude.conf"

         Using Port                    : usb
         Using Programmer              : USBasp
avrdude: usbasp_open("usb")
avrdude: seen device from vendor ->www.fischl.de<-
avrdude: seen product ->USBasp<-
         AVR Part                      : ATmega32U4
         Chip Erase delay              : 9000 us
         PAGEL                         : PD7
         BS2                           : PA0
         RESET disposition             : dedicated
         RETRY pulse                   : SCK
         serial program mode           : yes
         parallel program mode         : yes
         Timeout                       : 200
         StabDelay                     : 100
         CmdexeDelay                   : 25
         SyncLoops                     : 32
         ByteDelay                     : 0
         PollIndex                     : 3
         PollValue                     : 0x53
         Memory Detail                 :
  • \$\begingroup\$ perfect! thanks for this solution. worked perfectly \$\endgroup\$
    – Amrith
    Apr 30, 2021 at 14:07

For avrdude to correctly work with USBAsp, I found the best to install the libusbK driver, at least under Windows 7. This way it works with both - the official avrdude build, and the one from the Arduino IDE. With the libusb-win32 or the WinUSB it works with one, but fails with another.


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