Use the command line to run msiexec /a "C:\temp\MVCI Driver for TOYOTA.msi" /qb TARGETDIR=c:\temp\mvci to force the extraction and installation on x64 systems.
It is widely advised to disable antivirus temporarily during installation or to perform the installation on a dedicated Virtual Machine (VM) to isolate the software from your main operating system. How to set up Techstream in 2026 for your Toyota or Lexus autokent mvci multi driver x64 new