1. First, double-click to open the "Computer" shortcut on the computer desktop and enter the computer's resource manager.
2. Then click on the address bar above in the pop-up window, enter the address "C: \ program files \ common files \ Autodesk shared", and press enter to confirm.
3. Then in the pop-up window, select all DLL files, right-click and select Copy.
4. Then paste it into the installation directory of CAD application.
5. Then restart the computer, and you can punch in CAD normally.