Autodesk has terminated all rentals of ArtCAM earlier this month, and will end support for the application on November 1, 2018. Maintenance Plan and Subscription renewals for ArtCAM will continue to be available until July 7, 2018. You can read all of the details here. If you have a perpetual license, you can keep using the application for a long as you can find a system on which to run it. If you have a rental license (of the 2018 version), then it will expire permanently on February 1, 2021
