Xentry - Passthru Vmware

Date: [Current Date] Subject: Feasibility, configuration, and performance analysis of USB/Device Passthrough for Mercedes-Benz Xentry Diagnostics in VMware Workstation Pro/ESXi.

Create the VM with the following .vmx edits (not available in GUI): xentry passthru vmware

usb.generic.allowHID = "TRUE"
usb.generic.allowLastChance = "TRUE"
usb.generic.allowIntercept = "TRUE"
usb_xhci.present = "TRUE"           # USB 3.0 controller
usb_xhci.autoConnect.device0 = "vid:0x0403 pid:0x6015"  # Replace with your device
ehci.present = "FALSE"              # Disable USB 2.0 controller to avoid conflicts

| Symptom | Root Cause | Solution | |---------|------------|----------| | VM sees device but Xentry says “No VCI” | Guest driver not installed or D-PDU API missing | Reinstall J2534 driver after USB is connected | | Intermittent disconnection during coding | Host USB power management | Disable “Allow computer to turn off this device” on host | | Blue screen (BSOD) when connecting device | Driver conflict on host (e.g., WinUSB vs. vendor driver) | Use Linux host or hide device from host using devcon | | Xentry detects VM and refuses to start | Xentry anti-VM check (registry or RDTSC check) | Add monitor_control.disable_directexec = "TRUE" in .vmx (performance penalty) | | Symptom | Root Cause | Solution |