If you are using a demo or trial version that has expired, simply changing the date back often won't work because WinOLS stores "last run" timestamps in hidden files or the Windows Registry. How to Fix Wrong Date & Time Issues in Windows PC
Turn on the toggles for Set time automatically and Set time zone automatically .
Repeat the exact same steps under to ensure total network isolation. WinOLS Alternative Comparison winols 47 your system date is wrong new
This comprehensive troubleshooting guide explains why this error happens and provides actionable steps to restore your ECU tuning workflow. Why WinOLS 4.7 Triggers the System Date Error
@echo off echo Saving current date... set saved_date=%date% echo Changing date to 11/11/2021... date 11/11/2021 echo Starting WinOLS... start "" "C:\Program Files (x86)\EVC\WinOLS\ols.exe" echo Waiting 5 seconds for WinOLS to load... timeout /t 5 /nobreak >nul echo Restoring date to %saved_date%... date %saved_date% echo Done. If you are using a demo or trial
Choose , click Next, and browse to the installation directory of your WinOLS executable.
He double-clicked the icon. Instead of the familiar map editor, a cold, grey dialogue box popped up: date 11/11/2021 echo Starting WinOLS
High (blocks normal operation) Complexity of Fix: Low Permanent Fix: ✅ Yes, by maintaining correct system time.
This is an excellent method because it only affects the specific program, leaving all other applications and your internet connection unaffected by the old date.
The most direct way to resolve this is to ensure your Windows clock is perfectly synchronized with an official time server.