This is not an issue with the software. It is a system problem. The current license for Solid Edge 2D Drafting is a timed license. License updates are provided yearly for continued use and to help promote new versions of the softwarer. Because it is a timed license, there are checks made to ensure the license cannot be overridden. It would appear that the date of the machine has been at some point changed. Because of this system files will have future dates. The licensing mechanism checks for this and invalidates the license if there are system files with modified dates in the future. From a software standpoint there is nothing that can be done.