Skip the activation code rabbit hole entirely. Install com0com (via the setup_com0com_v3.0.0.0.exe signed binary) and get back to coding.
You will either infect your development machine or waste hours on broken keys. If you need the real VSPD, buy it. If you can’t afford it, use com0com – it does 80% of the job for 0% of the price. activation code for virtual serial port driver
Rating: ⭐⭐☆☆☆ (2/5 – with a heavy caveat) Skip the activation code rabbit hole entirely