Even with Techstream 14, keep the mvci driver for toyota.msi 13 installed. You can trick newer Techstream versions into using the older driver by renaming the J2534.dll file in the Techstream folder.
Q: Can I use the MVCI driver on other operating systems (e.g., Windows 10, macOS)? A: Check the system requirements for the MVCI driver to ensure compatibility with your operating system. mvci driver for toyota.msi 13
Windows is using a generic USB driver instead of the Toyota driver. Solution: Right-click the unknown device → Update Driver → Browse my computer → Let me pick from a list → Select “Toyota MVCI Driver” (Version 13). If not listed, run the MSI installer again with antivirus off. Even with Techstream 14, keep the mvci driver for toyota