i'm using Avast free. I am not sure if it's blocking it, and i did not say it does. my powerdvd is working fine for months now until after the program update (incompatibility?). this thread is a platform for every user to evaluate existing versions to better improve the existing one and it doesn't mean blaming Avast.
I haven't had issues with Avast for almost 2 years now, and looking back, I'm thankful for those who helped with all humility.