Proteus 8.9 Sp2 Professional With Arduino 1.8 ((better)) Free --install

Navigate to the Proteus Library folder. Depending on your installation, the path is typically:

To simulate Arduino boards within Proteus, you must add the appropriate library files. Proteus 8.9 Sp2 Professional With Arduino 1.8 Free --INSTALL

Ensure files were copied to ProgramData and not Program Files . Navigate to the Proteus Library folder