The default installation paths (Proteus 8.x):
Note: If the ProgramData folder is hidden, open Windows Explorer, go to the tab, and check the box for Hidden items . Alternative Proteus 8.x Path proteus library for stm32 install
Installing a Proteus library for STM32—most commonly the popular board—allows you to simulate high-performance ARM Cortex-M projects without needing physical hardware. The default installation paths (Proteus 8