Kaspersky Total Security 2021 21.3.10.391 For W... Verified Guide

remains a functional, multi-layered defense suite for Windows users, though it has recently been succeeded by a new subscription lineup . This specific build, released as part of the "MR3" update cycle, was designed to provide comprehensive protection ranging from traditional antivirus to advanced privacy tools like file encryption and parental controls. Key Features of Version 21.3.10.391

Disclaimer: This report is for informational purposes. Software status and support policies are subject to change based on regional laws and vendor decisions. Kaspersky Total Security 2021 21.3.10.391 for W...

One of the biggest selling points of version 21.3.10.391 was its light footprint. During independent tests (AV-Comparatives, Q1 2021), this version scored an "Advanced+" rating. Software status and support policies are subject to

This was a standout feature for Windows users. The software allowed users to schedule automatic backups to: This was a standout feature for Windows users

interface for its familiarity and robust feature set. Version 21.3.10.391 is a stable, "Goldilocks" version for those on older Windows hardware who need high-end protection without the overhead of the newest cloud-heavy versions.

Kaspersky Total Security 2021 is the premium tier of Kaspersky’s home user lineup. Version 21.3.10.391 represents a specific maintenance update released in early 2021. Unlike the standard "Anti-Virus" or "Internet Security" tiers, Total Security adds a suite of data protection and privacy tools.

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 Although superseded by later versions (2022, 2023, 2024, 2025), the 2021 edition remains functional with signature updates, albeit missing some newer cloud features.