Means his suite is not working, which is exactly why EICAR exists, to test your AV.So what? It is harmless.
Alerting to Eicar is quite simple. It is a meaningless excursion.
Use the options monitor all ports and scan all encrypted connections and run the test again with the browsers restarted.
EICAR is an industry standard test for testing if your suite is working correctly, is far from outdated.Does Kaspersky actually say this? If so, fine. Otherwise, an assumption. There are several malware protection programs that ignore Eicar. It is so 1990s.
Glad you managed to solve the issue.It's not worked but i found the solution (or source of problem). My router (Asus RT-AX55) uses "Air Protection" by Trend Micro. I turned off this service in my router and now kaspersky working fine.
Thank you everyone that you tried to help me!