Threat Secured pop up coming on screen!

Viruses and worms
1

From about 1 month i have this problem and i can’t fix it
Help please!

2

Hi, see: https://forum.avast.com/index.php?topic=208445.msg1419511#msg1419511

3

I have blocked the incoming traffic on port 445 and now all is OK!
Thank you Asyn!

4

You’re welcome.