Even after installation, you may encounter weird behaviors. Here is the troubleshooting matrix for Windows 11.
| Issue | Symptom | Windows 11 Fix |
| :--- | :--- | :--- |
| COM Port Jitter | Connection keeps dropping mid-diagnosis. | Go to Device Manager > Ports > Autocom COMxx > Properties > Port Settings > Advanced. Change COM Port Number to COM 3 or COM 5 (avoid COM 1/2/4/9). |
| USB Power Surge | Popup: "USB device malfunctioned." | The Autocom draws current. In Windows 11 Power Options > Advanced > USB Settings > Disable USB selective suspend. |
| Black Screen on Launch | Software opens but shows only a black GUI. | This is a DirectDraw issue. Create a shortcut to Delphi Autocom. In Target, add /opengl at the end. Example: "C:\Delphi\Autocom.exe" /opengl |
| VCI Not Found | Software says "No interface connected." | Run Delphi VCI Manager (if installed) as Admin. Click "Restore Firmware." Wait 60 seconds. Unplug/replug USB. |
| Slow CAN Bus | Vehicle reads data, but takes 10 seconds per request. | Windows 11 background scanning. Disable IPv6 on your Wi-Fi/Ethernet adapter. Disable Windows Defender Network Protection temporarily. |
Unlike modern "cloud-based" scanners (Autel, Topdon) that phone home, Delphi Autocom works 100% offline. In a world where diagnostic tools require subscriptions and internet access, the old Autocom is a digital anarchist. No account, no data sharing, no forced updates. Just you, your Windows 11 laptop (with Test Mode on), and the raw CAN bus.
Bottom Line: It’s a pain to set up. But once running, it’s a piece of automotive history that still earns its keep.
Have you managed to run Autocom on Windows 11 without crashing? Share your driver version in the comments below!
Unlocking the Power of Delphi Autocom on Windows 11: A Comprehensive Guide
In the world of automotive diagnostics, having the right tools at your disposal can make all the difference between a successful repair and a frustrating experience. Among the plethora of diagnostic tools available, Delphi Autocom has emerged as a leading choice for professionals and enthusiasts alike. With the advent of Windows 11, users are eager to explore how Delphi Autocom can be leveraged on this new operating system. This article aims to provide an in-depth look at Delphi Autocom, its features, and a step-by-step guide on how to use it effectively on Windows 11. Delphi Autocom Windows 11
What is Delphi Autocom?
Delphi Autocom is a diagnostic tool designed for automotive professionals and enthusiasts. It is part of the Delphi Technologies portfolio, a renowned name in the automotive industry. Autocom provides a comprehensive solution for vehicle diagnostics, offering a wide range of functions including reading and erasing fault codes, displaying live data, and performing actuator tests. The tool is compatible with a vast array of vehicles, making it a versatile option for anyone looking to diagnose and repair vehicles.
Key Features of Delphi Autocom
Delphi Autocom on Windows 11: Compatibility and Installation
With Windows 11 becoming the new standard, compatibility and installation of Delphi Autocom on this OS are of paramount importance.
Not all Autocom software works. Here is the "Interesting Chart" based on real user feedback: Even after installation, you may encounter weird behaviors
| Version | Windows 11 Compatibility | Cool Feature | Annoying Bug | | :--- | :--- | :--- | :--- | | 2020.21 | ❌ Crashes on launch | Last official update | Heavy DRM; hates 11 | | 2017.10 | ✅ Stable | Best for PSA (Peugeot/Citroen) | Slow GUI on 4K screens | | 2014.02 | ✅ Rock Solid | Works via VM or Test Mode | No cars after 2013 |
Verdict: Most pros use 2017.10 with Test Mode enabled.
Because you need to install the old USB drivers, you must boot Windows 11 into a special mode.
When you plug a Delphi Autocom (CDP, CDP+, or 2.0) into a fresh Windows 11 machine, nothing happens. Why? Microsoft killed the old trust. Windows 11 enforces Driver Signature Enforcement (DSE) for kernel-mode drivers. The original Delphi drivers (circa 2008-2015) use an old certificate that Microsoft no longer trusts.
The Interesting Hack: You have to enter "Test Mode." This is Windows’ secret backdoor for developers. By running bcdedit /set testsigning on, you tell Windows 11 to ignore driver signatures. Suddenly, that red "Driver failed to install" turns into a yellow warning, and your Autocom comes back from the dead.
| Component | Requirement | |------------------------|-----------------------------------------------------------------------------| | Hardware | Delphi Autocom CDP+ / CDP Pro / CARS unit. | | Software Image | Original/Cracked: Autocom CARS 2015.01, Delphi DPS 2019, or CARS 2020.| | Windows 11 Build | Pro or Enterprise (recommended for Group Policy adjustments). | | USB Cable | Shielded USB 2.0 A-B (max 2m). | | Disablements | Windows Defender Real-time, Core Isolation (Memory Integrity). | Have you managed to run Autocom on Windows
Introduction: A Tale of Two Eras
In the world of automotive diagnostics, few names carry as much weight as Delphi Technologies (now part of BorgWarner) and its legendary Autocom (often referred to as Autocom CDP or Autocom Delphi). For over a decade, the Delphi Autocom series—including the CDP, CDP+, and trucks variants—has been the go-to solution for independent workshops and mobile mechanics. It offers dealer-level diagnostics for a fraction of the price.
However, the software that powers these devices, primarily Delphi Autocom 2020 (the last major stable release) or the older Cars & Trucks software, was engineered during the reign of Windows 7 and Windows XP. Fast forward to 2025, and Windows 11 is now the industry standard.
The burning question on every mechanic's forum is: "Can I run my Delphi Autocom on Windows 11?"
The short answer is yes, but it requires a specific roadmap. This guide provides a deep dive into driver management, software installation, patch compatibility, and performance tuning to get your legacy hardware working on Microsoft's latest OS.