Diagbox Windows 11 (90% TESTED)

The PSA Group's (now Stellantis) DiagBox software is an essential professional diagnostic tool for owners and mechanics working on Peugeot, Citroën, DS, and certain Opel/Vauxhall models. As Windows 11 becomes the standard operating system, many users face a critical question: "Does DiagBox work on Windows 11?" The short answer is yes—but the journey involves careful version selection, precise installation, and systematic troubleshooting.

Disclaimer: This guide is for educational purposes. DiagBox is proprietary software owned by Stellantis. Using clone interfaces may violate local laws regarding vehicle emissions modifications. Always backup your vehicle’s ECU data before performing programming operations.

Method 1: The Best Solution – Virtualization (VMware/VirtualBox)

Intel VT-x or AMD-V enabled in your computer’s BIOS/UEFI (if using the VM method). Method 1: The Virtual Machine Approach (Highly Recommended) diagbox windows 11

Let the software compile its directory structures inside C:\DiagBox . This process can take up to 45 minutes. Do not close the installer background window even if it appears to freeze. Step 4: Map the Lexia Actia VCI Drivers

Windows 11 strictly blocks unsigned drivers, which are common in older diagnostic interfaces.

Find the VCI device (often listed as PSA VCI , ACTIA , or Unknown Device ). Click . The PSA Group's (now Stellantis) DiagBox software is

You need to temporarily disable Driver Signature Enforcement and Core Isolation .

Go to > Windows Security > Virus & threat protection .

This is the most stable method.

Right-click the installation executable (e.g., DiagBox_Setup_v9.85.exe ) and choose .

Download a pre-built DiagBox virtual machine image (typically distributed as an .ova or .ovf file packaging Windows 7 32-bit).