, ensure "Set time automatically" and "Set time zone automatically" are both toggled Command Line Resync Command Prompt
Right-click the time/date on your Taskbar and select Adjust date/time . Step 2: Toggle "Set time automatically" to Off .
Instead of changing the system clock, you can use a tool like (by NirSoft) to trick only the WinOLS application into believing it is a different date. Download RunAsDate . Open the tool and browse to your WinOLS.exe . Set the date back to a working time (e.g., 2023). winols 47 your system date is wrong upd
on the motherboard can cause the system clock to reset or lose time whenever the computer is powered off. Software Protection:
If you are an ECU tuner, you know that WinOLS is the gold standard for engine mapping, checksum correction, and DAMOS handling. However, with version 4.7 (and the subsequent updates, or "UPDs"), a notorious error has plagued users across forums, Facebook groups, and tuning shops: , ensure "Set time automatically" and "Set time
When your computer's date (3-4 years later in 2026) exceeds the expiration date hardcoded into the modified WinOLS executable (likely set in 2023/2024), the software stops running and displays the error.
Instead of manually shifting your Windows clock back and forth every time you tune an ECU, you can use specialized software utilities like or Time Stopper . Download a trusted time-freezing utility. Download RunAsDate
Find the original folder where you installed or extracted WinOLS 4.7. Locate the patch or loader ( loader.exe , fix.exe , etc.). Re-run the patcher as an administrator. Restart the computer and try running the software. 4. Reinstalling and Fixing the Date Beforehand
: The most stable solution is to upgrade to WinOLS 5 , which is compatible with Windows 10/11 and resolves many of the "time bomb" or folder access issues present in older versions.