https://www.youtube.com/watch?v=rKg46eRMQTU
1. Close Autocad 2018
2. Open notepad as Administrator
3. Open hosts file located in
(C:/Windows/System32/Drivers/rtc/hosts
note: show all files the see the hosts file
4. Add line below the text and type
127.0.0.1 genuine-software2.autodesk.com
5. Save and Close
6. Then Ejoy