The reason is that Kaspersky Anti-Virus 2017 works in server mode. It establishes network connections by itself and intercepts network traffic in order to scan it. Besides, Kaspersky Anti-Virus 2017 scans default network ports of popular applications.
If after the permissive rules have been set, the application you need to work with still informs you about the Internet not working properly, find the application and port in the interface of the third-party port it uses to create a permissive rule for it.
Release of antivirus database updates (required to protect your computer/server/mobile device)
Providing technical support over phone / web
Release of patches for the application (addressing detected bugs)
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