Before you begin your WinOLS 4.7 install, it is critical to understand what this software is and what it is not.

Here, you will see a component selection screen. For a full WinOLS 4.7 install, ensure these are checked:

Uncheck "Example Projects" to save space unless you are a beginner. Click Next.

Cause: Graphics driver incompatibility. Solution:


| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | "Dongle not found" | Driver not installed / USB port issue | Reinstall driver from the installation folder. | | "Error writing to registry" | Missing Admin rights | Right-click installer → Run as Administrator. | | Antivirus deleted a file | False positive | Restore file from quarantine, add WinOLS folder to exclusions. | | "Runtime error" | Corrupt Visual C++ Redistributable | Download/install latest VC++ runtimes from Microsoft. |

Cause: WinOLS is not communicating with your OBD driver. Solution:

Even with a perfect WinOLS 4.7 install, errors happen. Here are the top five and their fixes.

A: With a USB dongle, yes – just move the dongle. With a software license, typically only one machine. Contact EVC for multi-seat licenses.