WinOLS checks the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation . If this key is corrupted, the software sees a date mismatch.
For the most stable experience, it is recommended to use the latest WinOLS 5.x version (currently v5.89 as of April 2026), which handles modern Windows time protocols much more reliably. How to Fix Wrong Date & Time Issues in Windows PC winols your system date is wrong better
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