Wait for it to reach the "Installing the application" phase.

In an era where a stable internet connection is often taken for granted, the concept of an "offline installer" might seem archaic. However, for millions of users worldwide—from corporate IT administrators to rural home users—the remains an indispensable tool. Whether you are dealing with unreliable broadband, managing multiple PCs, or recovering a system already crippled by malware, knowing how to obtain and use a full installation package is a critical skill.

Activating Kaspersky offline is possible—((1.888. 754.6002~))but the method depends on your version. Offline model of update download - Kaspersky Support

: Avoids installation failures caused by unstable internet connections or slow server responses during a live download. How to Get a Kaspersky Offline Installer