Failed to read descriptor from node connection: A device attached to the system is not functioning error using ChromeDriver Selenium on Windows OS

问题

I got this while running the selenium webdriver script in python I also set the path in System Environment and also tried downloading the webdriver that matches with my chrome version. And also letest version also. But I still get this error:

[8552:6856:1120/155118.770:ERROR:device_event_log_impl.cc(211)] [15:51:18.771] USB: usb_device_handle_win.cc:1020 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F)
[8552:6856:1120/155118.774:ERROR:device_event_log_impl.cc(211)] [15:51:18.774] USB: usb_device_handle_win.cc:1020 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F)
[8552:6856:1120/155118.821:ERROR:device_event_log_impl.cc(211)] [15:51:18.821] USB: usb_device_handle_win.cc:1020 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F)

I used this in my code :

driver = webdriver.Chrome(resource_path("C:\\webdriver\\chromedriver.exe"))  # to open the chromebrowser
driver.get("https://web.whatsapp.com")

回答1:

This error message...

[14432:11656:1120/161059.539:ERROR:device_event_log_impl.cc(211)] [16:10:59.539] USB: usb_device_handle_win.cc:1020 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F)

...implies that the ChromeDriver raised an error while in trying to initiate/spawn a new Browsing Context i.e. Chrome Browser session.

Analysis

This error occurs due to an USB device which is attached to the windows-10 system and isn't functioning properly.

This error is defined within usb_device_handle_win.cc as follows:

void UsbDeviceHandleWin::GotDescriptorFromNodeConnection(
    TransferCallback callback,
    scoped_refptr<base::RefCountedBytes> request_buffer,
    scoped_refptr<base::RefCountedBytes> original_buffer,
    Request* request_ptr,
    DWORD win32_result,
    size_t bytes_transferred) {
  std::unique_ptr<Request> request = UnlinkRequest(request_ptr);
  if (win32_result != ERROR_SUCCESS) {
    SetLastError(win32_result);
    USB_PLOG(ERROR) << "Failed to read descriptor from node connection";
    std::move(callback).Run(UsbTransferStatus::TRANSFER_ERROR, nullptr, 0);
    return;
  }

Solution

This error isn't harmful and doesn't blocks the spawning of the new Browsing Context i.e. Chrome Browser session. So you can safely ignore the error.

However in your code block you need to replace the keyword resource_path with executable_path and your effective code block will be:

webdriver.Chrome(executable_path=r'C:\webdriver\chromedriver.exe') # to open the chromebrowser 
driver.get("https://web.whatsapp.com")

回答2:

The error is probably because you have used parenthesis in the resource_path variable. The code should be as following:

driver = webdriver.Chrome(resource_path="C:\webdriver\chromedriver.exe") # to open the chromebrowser 
driver.get("https://web.whatsapp.com")

if still there is any problem you can try keeping the web driver in the same folder as the python file.

来源：https://stackoverflow.com/questions/64927909/failed-to-read-descriptor-from-node-connection-a-device-attached-to-the-system

标签

python

selenium

google-chrome

windows-10

selenium-chromedriver