button under the "Synchronize your clock" section to force an update from Microsoft's servers. Verify Time Zone
Set the VM’s system date permanently to the required legacy date (e.g., 2021).
: WinOLS 4.7 is an older version; as of 2026, the current official release is WinOLS 5.89 winols 4.7 your system date is wrong
WinOLS is a professional ECU tuning software. If you own a legitimate license, contact support – the error may be due to an expired maintenance contract or incorrect license server communication.
Below are proven solutions, ranked from simplest to most advanced. button under the "Synchronize your clock" section to
: Windows might be failing to sync with the official time server (time.windows.com), causing a slight drift that triggers the security error. Software Aging : Version 4.7 is an older release; newer versions like WinOLS 5.89
This error is not a bug within the software itself, nor is it a random glitch. It is a included by the software's developers, EVC, to protect their intellectual property. The mechanism is a form of "time bomb" which checks the system's date against an expected or hard-coded value. If you own a legitimate license, contact support
Test on another machine
Save the file as (ensure the extension changes from .txt to .bat ). Right-click the batch file and select Run as Administrator . Method 4: Run WinOLS inside a Virtual Machine (VM)
Code signing / certificate validation