To confirm you are on version 21.3.10.391, hover your mouse over the Kaspersky icon in the Windows system tray. A pop-up will display the full version number. 2. Core Protection Features

Rather than forcing users to purchase discrete individual utilities, the Total Security package includes premium versions of auxiliary utilities to reduce your software footprint: Kaspersky Total Security 20 release notes

To guarantee fluid operation without slowing down system tasks, your PC should meet or exceed these basic hardware guidelines: About Kaspersky Total Security

: Protect sensitive documents in "vaults" and permanently delete files so they cannot be recovered. System Requirements for Windows

Requires a 1 GHz processor, 1–2 GB of RAM, and approximately 1.5 GB of free disk space. Update Status: Legacy products like this version continue to receive virus database updates and standard technical support from Core Security Features Does KIS 21.3.10.391 Patch (C) rolling-out? [MERGED]

The 21.3.10.391 update addressed key system flaws and introduced subtle quality-of-life adjustments:

In the ever-evolving world of cyber threats, keeping your defense system up to date is not just a suggestion—it is a necessity. Kaspersky released version 21.3.10.391

This build delivers an expansive range of defenses—combining traditional signature scanning with real-time proactive behavioral monitoring. Below is an in-depth breakdown of this specific software version, its core features, technical deployment, and place in modern digital defense. Key Technical Overview About Kaspersky Total Security

If you need a full descriptive text for documentation or a download link, here’s an example: