The Firewall in Avast Premier does not care at all on Windows 10 Pro Insider Preview (Build 10074).
This section of this forum is for english only. Different language should be posted here https://forum.avast.com/index.php?board=21.0
Windows 10 is still in testing phrase and will change from time to time. Though Avast is compatible with Windows 10
I apologize and thank you for the tip.
I posted to see if anyone else is going through this difficulty and managed to solve somehow.
Your welcome