Usb Library Version 03.02.07
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Usb Library Version 03.02.07
How to Fix USB Interface Not Found Error with USB Library Version 03.02.07
If you are using a Ross-Tech HEX-V2 or HEX-USB+CAN device to communicate with your car's diagnostic system, you may encounter an error message that says "USB Interface Not Found! USB Library Version 03.02.07" when you run the VCDS software on your Windows PC. This error means that the VCDS software cannot detect the device or the driver for it. There are several possible causes and solutions for this problem, which we will discuss in this article.
What is USB Library
USB Library is a component of the VCDS software that provides generic access to USB devices. It is based on libusb, which is a C library that facilitates the production of applications that communicate with USB hardware[^4^]. USB Library version 03.02.07 is the latest version as of April 2023.
What Causes the Error
The error can be caused by various factors, such as:
A faulty or incompatible USB cable or adapter
A damaged or outdated device firmware
A missing or corrupted device driver
A conflict with another USB device or software
A security software blocking the device access
A wrong COM port or USB interface selection in VCDS
How to Fix the Error
To fix the error, you can try the following steps:
Make sure you are using a good quality USB cable or adapter that supports data transfer and not just charging. Avoid using hubs or extension cords.
Make sure your device firmware is up to date. You can check the firmware version by selecting Test in VCDS. If it says Firmware Update Required, follow the instructions on how to update it.
Make sure your device driver is installed and working properly. You can check the driver status by going to Device Manager and looking for Ross-Tech Direct USB Interface under Universal Serial Bus Controller. If it has a yellow exclamation mark or a red cross, right-click on it and select Update Driver Software. Browse to C:\\ROSSTECH\\VCDS and let Windows install the driver.
Make sure there is no conflict with another USB device or software. Disconnect any other USB devices except for your keyboard and mouse. Close any other software that may use USB ports, such as antivirus, VPN, virtual machines, etc.
Make sure your security software is not blocking the device access. You may need to add an exception for VCDS or disable your security software temporarily while using VCDS.
Make sure you have selected the correct COM port and USB interface in VCDS. With a HEX-V2 device, you need to select the USB port in VCDS. With a HEX-USB+CAN device, you need to select the COM port that matches the one assigned to your device in Device Manager.
Conclusion
We hope this article has helped you resolve the error "USB Interface Not Found! USB Library Version 03.02.07" when using VCDS with your Ross-Tech device. If you still have problems, you can contact Ross-Tech support for further assistance[^1^] [^2^] [^3^]. 061ffe29dd