For W... | Kaspersky Total Security 2021 21.3.10.391
Note: The string appears to be truncated at "W...", which almost certainly stands for Windows.
Comparison: 2021 vs. The Newer 2024/2025 Versions
Why would anyone install the 2021 version today? Generally, one should not, because Kaspersky ends support for older versions after 2-3 years. However, for historical or offline use: Kaspersky Total Security 2021 21.3.10.391 for W...
| Feature | 21.3.10.391 (2021) | Modern Kaspersky (2024+) | | :--- | :--- | :--- | | Ransomware rollback | Limited to 15 minutes | Unlimited via cloud backup | | VPN | 200 MB/day free | 300 MB/day free | | UI Speed | Slightly sluggish on low RAM | Optimized for SSDs | | Password Manager | Standalone app | Integrated into tray menu | | Support for Win 7 | Full support | Limited (extended support) | Note: The string appears to be truncated at "W
Pros and Cons Summary
Performance and system impact
- Resource usage: heavier than native Windows Defender and lightweight antiviruses; noticeable on older hardware during full scans or update processes.
- Optimization features: gaming mode / silent mode reduces interruptions during full‑screen apps.
- Example: on a midrange laptop, quick scans are generally acceptable; full scans and background database updates can spike CPU and I/O.
What is Kaspersky Total Security 2021 (21.3.10.391)?
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. Comparison: 2021 vs
The "for Windows" designation confirms this version is optimized for the Windows operating system (compatible with Windows 7 SP1 through Windows 10 20H2 at the time of release).