The Time Out number set in the WIBU-KEY program is too small and forces the license to be released while the user is still working. On the computer with the WIBU-KEY attached, go to Control Panel > WIBU-KEY and select the Server tab. Change the time out number to a larger number (1440 in the example). If you have the floating license WIBU-KEY also restart the WkLAN server after the time out number has been changed.