If you are using a version of WinOLS that relies on a physical USB dongle or a specific hardware ID, a date mismatch between your BIOS and the OS can trigger a security lockout.
Toggle the switch for to OFF , then back to ON .
To help narrow down the best solution for your setup, please let me know: What are you currently running?
WinOLS is a Windows application used to edit engine control unit (ECU) maps. A common error users encounter is a dialog or message stating “Your system date is wrong” (or similar). This message prevents licensing, project opening, or certain operations. This paper explains why that message appears, how to diagnose the underlying cause, and step-by-step corrective actions and preventative measures. winols your system date is wrong
If your dongle is physically damaged (common with USB keys after years of use), its internal clock crystal may have failed. In this case, no software fix will work. You must purchase a replacement dongle from EVC or an authorized distributor like or Alientech .
Use this new shortcut to launch WinOLS automatically with the old date. Method 3: Replace the Loader or Patch File
Is your Windows system clock right now?
. This ensures the software has the necessary permissions to verify system files and registry keys related to time-stamping. Update WinOLS
If your BIOS time resets every time you unplug the computer, your CMOS battery is dead.
To avoid changing your entire system's clock, use a utility like . Download and open RunAsDate . Select the WinOLS executable (.exe). Set the desired date (e.g., January 1, 2014). Create a shortcut to launch WinOLS with this "frozen" time. 4. Update the Software If you have a legitimate license: Visit the EVC Electronic website . Download the latest version or update. Newer versions fix bugs related to date checks. Summary Table Fix Method Time Sync Modern users Fast, permanent Doesn't fix expired licenses RunAsDate Expired trials No system impact Requires third-party tool Date Rollback Legacy versions No tools needed Breaks internet browsing If you are using a version of WinOLS
Advanced users can check if WinOLS writes a "last known good date" to the registry. Open regedit and search for "WinOLS". Look for keys named LastValidDate , SystemDateCheck , etc. If you find a value that doesn’t match your current date, try deleting that key (backup first). Incorrect registry edits can damage your Windows installation. Only attempt if you’re experienced.
The error is not a software bug but a deliberate security or integrity check. Primary causes include: