Scroll down to and click Add or remove exclusions .
WinOLS is developed by EVC Electronic. It allows users to modify the data within an ECU (Engine Control Unit) to improve performance, fuel efficiency, or adjust parameters for modified engines.
The full map searching (Checksum) modules only activate on application boot.
After restarting WinOLS, verify that the installation key activation was successful:
Navigate to your installation folder (typically C:\Program Files (x86)\EVC ).
Even if you have a software key, WinOLS may still rely on a virtual dongle driver.
Install the software directly to the default directory structure recommended by the installer. If you want to troubleshoot this further, let me know: Which version of WinOLS are you trying to install?
to ensure it has the necessary permissions to write registry keys. Enter Registration Data Open WinOLS for the first time. When the registration window appears, enter your Customer Code exactly as provided by EVC. Confirm Activation
Before beginning, ensure you have administrative privileges on your computer. Some versions of WinOLS, particularly older versions like 2.24, are designed to work only under 32‑bit systems (Windows XP or Windows 7) . For more modern releases, compatibility is broader, but using a dedicated virtual machine is a common best practice to avoid conflicts with your main operating system .
: If you are using an older version or a specific loader (like loader_ols_32bit ), ensure the loader is placed in the correct directory. In some legacy cases, the program must be launched strictly through the loader shortcut to recognize the completed key.
Once the app restarts:
The software will automatically dial out to the server to check your licenses and fetch the latest updates.
Exit the application entirely. Ensure it is not still running in the Windows Task Manager. Wait 10 Seconds:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations
Add the entire WinOLS installation directory (usually C:\Program Files (x86)\EVC ) to your antivirus . 3. Clear Registry and Leftover Configuration Files
To help narrow down the exact cause of your installation loop, let me know: Which of WinOLS are you trying to install?
