Connecting a VCDS interface, such as the HEX-NET, to a Windows 10 machine can sometimes present challenges. This article addresses the common issue of “Unable to open interface” errors and provides potential solutions, specifically focusing on driver compatibility with different Windows 10 builds.
Experiences with a HEX-NET interface highlight potential driver conflicts in Windows 10. Initially, upgrading from a HEX-CAN USB interface to a HEX-NET WiFi interface aimed to leverage the convenience of wireless diagnostics with VCDS Mobile on an Android tablet. While the initial connection and code reading were successful, unknown ROD (Repair Order Data) fault codes prompted further investigation. Attempts to connect the HEX-NET in infrastructure mode to a Windows 10 PC via USB resulted in the “Unable to open interface, it may be in use by another program” error within the VCDS software.
Troubleshooting steps, including disabling firewalls and uninstalling antivirus software, proved unsuccessful on a Windows 10 64-bit system. However, connecting the HEX-NET to an older PC running Windows 10 Pro 32-bit (build 1607) allowed successful interface recognition and ROD updates within VCDS. Subsequent Windows updates on this older PC revealed that functionality was maintained through build 1903, but was broken after updating to build 1909. The same “Unable to open interface” error reappeared.
Further testing on a Windows 7 Pro 32-bit system confirmed successful HEX-NET connection and operation. This strongly suggests a compatibility issue between the VCDS drivers and Windows 10 build 1909 (and potentially later builds). While a definitive solution for Windows 10 build 1909 compatibility remains elusive, utilizing an older Windows operating system or maintaining a Windows 10 system at build 1903 or earlier provides a reliable workaround.
The incompatibility with Windows 10 build 1909 points towards potential driver conflicts introduced by the operating system update. It highlights the importance of verifying driver compatibility when using diagnostic interfaces with newer Windows versions. While further investigation is needed to pinpoint the exact cause of the issue, users facing similar problems can consider the outlined workarounds to ensure continued functionality with their VCDS systems.
This experience underscores the need for ongoing driver updates and compatibility testing by Ross-Tech, the developers of VCDS, to address potential issues arising from Windows updates. Users encountering similar problems are encouraged to consult Ross-Tech’s official documentation and support forums for the latest information and potential solutions. Testing different USB ports and cables can also be beneficial in troubleshooting connection problems.
