Kaspersky Total Security 2021 21.3.10.391 For W... -

I can create a full guide on Kaspersky Total Security 2021 (version 21.3.10.391) for Windows — installation, setup, configuration, feature walk-through, performance/tuning, troubleshooting, and removal. I'll assume you want a comprehensive, step-by-step manual including screenshots locations (text descriptions), recommended settings for privacy/security, common issues and fixes, and safe uninstall. Proceeding with that assumption.

Kaspersky Total Security 2021 (build 21.3.10.391) is the flagship consumer security suite from Russian cybersecurity firm Kaspersky. Designed for Windows 7, 8, and 10, it aims to provide all-in-one protection against malware, ransomware, phishing, financial threats, plus privacy tools like a password manager, file shredder, and parental controls. Although superseded by later versions (2022, 2023, 2024, 2025), the 2021 edition remains functional with signature updates, albeit missing some newer cloud features. Kaspersky Total Security 2021 21.3.10.391 for W...

In independent lab tests (AV-Comparatives, AV-Test) from 2021, Kaspersky consistently earned 100% protection against widespread malware and 99.8% against 0-day threats. I can create a full guide on Kaspersky

21.3.10.391

Kaspersky Total Security build was a specific release of the 2021 product line. It functioned as the company’s flagship premium security suite, offering multi-layered protection, a firewall, parental controls, and password management. Firewall & network protection

Bottom Line

As of late 2024, Kaspersky has largely transitioned from the "Total Security" branding to a new simplified tier system: Standard, Plus, and Premium Kaspersky Support Forum New Kaspersky Total Security Software Solutions

This specific update focuses on smoothing out the user experience and tightening web-based defenses. Enhanced Web-Antivirus

Firewall & network protection