If you are seeing the error in WinOLS 4.7 , it typically occurs because the software has detected a discrepancy between your computer's local time and its internal security checks—often triggered after an update or when using certain versions. Quick Fixes for WinOLS System Date Error

In VMware, check the settings under and ensure "Synchronize guest time with host" is checked. A Note on "Updated" 4.7 Versions

Ensure your "Set time automatically" toggle in Windows Settings is either consistently ON (if you have a legal license) or consistently OFF (if you are using a workaround). The Official Route:

This error is a common headache for WinOLS users, especially those using "patch" versions or older releases. It essentially means the software has detected a discrepancy between its internal expiration/validation logic and your computer's clock.

If you need a for a tuning blog or magazine, I can write a detailed piece on proper WinOLS licensing, version 4.7 changes, and troubleshooting date errors without hacks — just let me know.

: If your computer's internal battery is dying, the date may reset every time the PC restarts, triggering the WinOLS check.