WinOLS writes this licensing data to specific directories or Windows Registry paths.
: The key file you are using does not match your specific Hardware ID (HWID). Step-by-Step Solutions to Fix the Loop
To successfully install WinOLS (specifically common versions like 2.24) and handle the "restart app" message after adding the key files, follow this sequence: winols install key completed restart app
When you see the message , it means the license has been written into the software’s configuration file, but it is not yet active in the current running session. Why a Restart is Required:
WinOLS is a professional ECU tuning software developed by EVC, designed to modify the firmware within a vehicle's engine control unit (ECU) . This powerful tool allows experienced tuners to adjust parameters such as fuel delivery, boost pressure, torque limiters, and ignition timing . It is the tuning world’s version of Photoshop—extremely powerful, but only effective when you understand what you are doing . WinOLS writes this licensing data to specific directories
WinOLS uses a secure registration system to link the software to your specific workstation. The "Restart App" prompt typically appears after one of the following actions:
Always download the latest version of WinOLS from the official EVC website (www.evc.de). Using outdated or unofficial versions increases the risk of bugs, security vulnerabilities, and compatibility issues. The official website also provides the complete instruction manual as a PDF download, which is an invaluable resource . Why a Restart is Required: WinOLS is a
Residual data from previous trial versions or failed installations interferes with the new key. Step-by-Step Solutions to Fix the Loop
A: Yes. Windows 11 has stricter driver signature enforcement and virtualization-based security (VBS). You may need to disable Memory Integrity (Core Isolation) in Windows Security settings to allow WinOLS dongle drivers to load.
Details
Close the app. Right-click the WinOLS shortcut and choose . Re-enter the key. "Error Start Process"