Had exactly the same issue.
U changed the time (or time zone) to a earlier time - so the ILok App thinks u want to cheat.
Workaround: Change time back OR (what i did)
Download the newest Ilok Licensing Manager from
http://installers.ilok.com/iloklicen...allerWin64.zip, extract and save it to an USB Stick -> exit to the Windows Layer (Press and hold STRG and click "Shut down" in Options) - Plug that USB Stick in - and install the new Ilok Licensing Manager -> Reboot -> connect the Engine to the internet and let the ilok licensing manager do the work.
Then u r fine.
Hope that helps.