Cannot see my machine on "network" tab

Avast Free Antivirus / Premium Security
1

Hello,
I have AVAST free version installed with all things standard.
I cannot see this machine any longer in my network from some machines, but from others I can.

I assume this is a routing issue of a protocol. But I so not know what protocoll this can be and how to modify routing or firewall settings. Maybe AVAST has changes some settings of the firewall?

All machines are running Win10 Professional, newest version.

Thanks for your time!

2

Hi,

Could you please add a few screenshots to your post so that we may have a better understanding of your issue.