Hi David,
Thanks for your answer.
Before creating this post I tried what you are suggesting, but it didn't work.
I'm connecting a Thingmagic RFID module with FTDI chip.
This hardware has been running for many years without any problems over all platforms (windows, Android,...) but the other day a client of my company complained that this hardware was not working for him. Upon investigation, it was concluded that this was the problem. Avast was uninstalled and it worked. I tried same setup installing Avast in my personal computer and result was the same.
Anyway, I think I will also request support from FTDI.