When you launch WinOLS 4.7, click on a DAM file, or attempt to write a tune, the software performs several checks. If it detects an anomaly in the system clock relative to its internal license logic, it halts all functionality and displays:
If you are using a demo version or a license with a specific end-date, the software monitors the CMOS battery and Windows clock to ensure the time hasn't been "rolled back."
: Some users find that running the executable in compatibility mode for Windows 8.1
: 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
If your PC date resets every time you reboot, your motherboard’s CR2032 battery may be dead and needs replacement. ⚠️ Version-Specific Insights (4.7)
WinOLS 4.7 was released years ago. Like many software licenses from that era, it uses a that wasn't designed to look past a certain time horizon.
Are you running WinOLS on a or your main OS ? Which Windows version are you currently using? When you launch WinOLS 4
Right-click the primary folder, select Export to create a backup file on your desktop, and then safely delete old or corrupted sub-keys. Restart your PC and launch WinOLS 4.7 as an administrator. 4. Hardware Check: Replace the CMOS Battery
For those using specific loaders for WinOLS, the software may expect a very specific file structure.
This protection is most frequently encountered when using unofficial, cracked, or shared versions of WinOLS. Legitimate, licensed versions of WinOLS 5, for example, do not have this issue. The error can persist even after a clean Windows installation, making it a resilient obstacle. Like many software licenses from that era, it
Download and install a trusted date-modification utility (e.g., RunAsDate).
Right-click the display on the bottom right of your taskbar. Select Adjust date/time . Toggle Set time automatically to Off . Toggle Set time zone automatically to Off .
If you get the date error inside a VM, it means the . To fix this, open your VM software configuration settings, navigate to the integration properties, and check the box for "Sync guest time with host" . Avoid manual clock adjustments inside a VM, as this causes immediate anti-tamper triggers in WinOLS.
For the hobbyist or tuner on a budget, the patched version may be the only viable option. However, proceed with extreme caution. Use a dedicated, offline laptop or virtual machine for these installations and be aware of the inherent security risks.
Free online patches for version 4.7 frequently contain trojans or keyloggers that steal vehicle files. The Ultimate Solution: Upgrade to WinOLS 5