Sometimes, security software prevents WinOLS from reading its license file correctly.
For advanced users who do not want to change the global system date, tools like (from NirSoft) allow you to launch WinOLS with a fake system date only for that specific application . winols+47+your+system+date+is+wrong
This is the most commonly discussed solution in tuning forums. However, many users report it does not work. winols+47+your+system+date+is+wrong