Use this new shortcut to launch WinOLS. The software will "think" it is 2014, while your Windows system stays on the current date. 4. Check for CMOS Battery Failure
Click under the "Synchronize your clock" settings. Restart WinOLS. 2. The "Date Rollback" Method (For Older Versions)
Your computer’s BIOS or Windows CMOS battery is dying, causing your system time to reset to a default date (like 2000 or 2010). winols your system date is wrong better
If your computer forgets the date every time you unplug it, your motherboard's is likely dead. This is common in the older laptops often used for garage work. Replacing this $2 battery will stop the date from resetting and solve the WinOLS error permanently. Moving Beyond the Error
If you are using a trial version or a version with a timed license, the software detects that the current date is beyond the allowed range. Use this new shortcut to launch WinOLS
While the "System Date is Wrong" error is fixable, it is a symptom of using outdated software. Modern ECU files (especially for MD1, MG1, or EDC17 controllers) often require newer checksums and plugins found in .
If you are using an older version of WinOLS that worked previously but suddenly stopped, the software likely has a "time bomb." Check for CMOS Battery Failure Click under the
Before trying technical workarounds, ensure your time is actually correct.
Manually change the year to (common "safe" years for version 2.24).