This is a lesser-known cause. If you are trying to open a specific .OLS project file when the error appears, the file itself may have a corrupted timestamp.
If the system date falls outside the expected range (e.g., set to 2020 when the license was issued in 2025, or set to 2030 when the license expired), the security protocol triggers the error and prevents the software from loading or opening files.
Relaunch the program to allow it to regenerate clean configuration files. 5. Check and Replace the Motherboard CMOS Battery winols your system date is wrong
Sometimes, running the software with administrative privileges can resolve issues related to access and permissions.
Before modifying any software files, ensure your operating system's clock is completely accurate. This is a lesser-known cause
Restart your computer. Enter the BIOS/UEFI (usually by pressing Del, F2, or F10 during boot). Look at the inside the BIOS.
If you are running an older or unofficial version of WinOLS that relies on a specific expiration window, you may need to trick the software. Open the Windows settings. Turn off Set time automatically . Click Change under "Set the date and time manually". Relaunch the program to allow it to regenerate
: A significant discrepancy between the local system time and the Universal Time Coordinated (UTC) expected by the EVC license server. License Sync Issues
Click the button under the "Synchronize your clock" section. Restart your computer and try launching WinOLS again.
If you want, I can produce a one-page printable checklist or a PowerShell script to auto-check and fix common time issues—tell me which.