2. Now launch ActCAD Software. If it is first time usage in this computer, it will display a message “This computer is not authorised, please contact your administrator”. Client can add upto five computers (unique computer ids) in ActCAD Client Login. Computers ids can be changed any number of times without the need to contact us. This check is needed to avoid unauthorized usage of your license key by someone else. Client can monitor the license usage details to find who is actively using the lciense.