Autokent Mvci Multi Driver X64 Fixed [top] May 2026

Note: I have framed this as a hypothetical solution to a driver error. Always verify the source of driver files before installation to avoid malware.

Step D: Disable Antivirus Real-Time Protection

Windows Defender and third-party AVs frequently flag the mvci64.sys (kernel driver) as a heuristic risk. Temporarily disable it.

Introduction

If you are an automotive diagnostic technician, a fleet manager, or a DIY enthusiast working with modern vehicles, you have likely encountered the acronym MVCI (Multiple Vehicle Communication Interface). When paired with clones or aftermarket versions of the Toyota/Lexus MVCI (also known as the Mongoose Pro or J2534 Pass-Thru device), driver conflicts are almost inevitable. This is where the search term "autokent mvci multi driver x64 fixed" enters the conversation. autokent mvci multi driver x64 fixed

But what exactly is this driver package? Why do so many users search for the "fixed" version? And how can you safely install it on a 64-bit Windows system without bricking your diagnostic setup?

In this article, we will dissect the Autokent MVCI Multi Driver, explain the "x64 fixed" moniker, provide a step-by-step installation guide, and troubleshoot common errors. Note: I have framed this as a hypothetical

Step 2: Run the Installer

  1. Locate the downloaded file (usually named something like Autokent_MVCI_Driver_x64_Fixed.exe or contained within a ZIP/RAR folder).
  2. Right-click the setup file and select Run as Administrator.
  3. Follow the on-screen prompts. Click "Next" and accept agreements until the installation finishes.
    • Note: If the installer asks for a destination folder, the default is usually C:\Program Files (x86)\Toyota Diagnostics\MVCI Driver.

Step A: Disable Driver Signature Enforcement (Temporarily)

For the initial installation of the fixed driver, you must reboot Windows into Disable Driver Signature Enforcement mode.

How to do it on Windows 11/10:

  1. Hold Shift while clicking Restart.
  2. Go to Troubleshoot > Advanced Options > Startup Settings > Restart.
  3. Press 7 or F7 for "Disable driver signature enforcement."

Part 4: Step-by-Step Installation Guide (Windows 10/11 x64)

Before proceeding, disable antivirus (especially McAfee and Avast) as they may flag modified .sys files as malware. Also, turn off Windows Defender’s Real-time protection.

Step C: Uninstall Old MVCI Drivers

  1. Open Device Manager.
  2. View > Show hidden devices.
  3. Expand Ports (COM & LPT) and Universal Serial Bus devices.
  4. Right-click any "Mongoose," "J2534," or "USB Serial Converter" with a yellow triangle > Uninstall device.
  5. Check "Delete the driver software for this device."

Step 5: Configuring Techstream (If using Toyota Techstream)

  1. Open Toyota Techstream.
  2. Go to Setup > VIM Select.
  3. In the "Interface Setup" window:
    • Communication Interface: Select MVCI.
    • Connection: Select Autokent (or the name found in your registry).
  4. Click Test Connection.
    • If successful, you will see the firmware version and the cable model.
    • If it fails, double-check that the cable is plugged in and the VIM is set to "MVCI" and not "J2534".