| Problem | Likely Cause | Solution | |---------|--------------|----------| | Tech2Win says "No valid license found" | TIS2Web service crashed or didn't start | Reboot VM. Manually run C:\TIS2Web\start_server.bat as admin. | | USB VCI is not seen inside Tech2Win | VMware USB arbitration conflict | In host PC, go to Device Manager → Universal Serial Bus controllers → Disable "USB Selective Suspend". Then reboot host. | | "Communication Error 23" when programming | Power supply too low on vehicle battery | Connect a battery charger (14.5V minimum) to the vehicle. GM modules are voltage-sensitive during flashing. | | Global TIS shows empty parts list | Database paths not mounted | The VM expects C:\GlobalTIS\DB to exist. If missing, re-extract the ZIP. | | VMware Workstation 9 crashes on Windows 11 | Hyper-V conflict | As admin, run bcdedit /set hypervisorlaunchtype off and reboot host. |
The .zip format contains the .vmx (configuration) and .vmdk (virtual disk) files. Once extracted, users can simply "play" the machine in VMware Workstation or Player without manually installing every individual component. Functionality and Capabilities | Problem | Likely Cause | Solution |
However, you should be aware of its limitations. The software is and may have security and compatibility risks. There is no long-term support for 20+ year-old code with discontinued online services. Also, the data is limited to vehicles up to 2011-2012 , and for full online programming, an official MDI or a compatible high-end interface is essential . Then reboot host