LAN access

Avast Free Antivirus / Premium Security
1

Build 17.3.3442.0 is blocking access to my LAN. Internet works fine but no access to an LAN machined.

2

What OS/SP ?
What exact avast version ?

3

Windows 10 Home 64-bit.
How many versions of Avast does Build 17.3.3442.0 apply to?

4
How many versions of Avast does Build 17.3.3442.0 apply to?
How about 4? https://www.avast.com/compare-antivirus