Download Details

Version: 2021.03.10.391 (latest)
File size: 7.05 MB
License: Free Trial
Developer: Kaspersky Lab
Supported OS: Windows 11, Windows 10
Installers: 64-bit (x64)
Downloads: 5174
Rating: 4.2 out of 5 · 41 reviews

Reviewed by Ahmed Madbouli
Tested on Windows 11 and 10 · November 4, 2026 · How we review

Screenshots

Kaspersky Internet Security is a paid antivirus suite for Windows PCs, offered here as a free trial. It combines malware scanning, a firewall, safe browsing and privacy tools in one package.

Kaspersky Internet Security Screenshot

It suits home users who want a full security suite rather than a bare scanner. The trial is the easy way to check whether it fits your PC before paying.

Kaspersky has since moved its home range to newer product names, so check what your region currently offers.

What is Kaspersky Internet Security?

Kaspersky Internet Security is a Windows security suite from Kaspersky Lab. It goes beyond a plain antivirus by adding a firewall, web protection and privacy controls.

It is offered here as a free trial, so you can test it before deciding on a paid license.

Malware and ransomware protection

The core engine scans files, programs and downloads in real time. It combines signature checks with behavior-based detection, which watches what a program does instead of only matching known samples.

That matters for ransomware, where suspicious file-encrypting behavior can be stopped early.

Tip: Run one full scan right after installing, then leave real-time protection on and let scheduled scans handle the rest.

Safe browsing and phishing protection

Web protection checks links and sites against phishing and malicious page lists. Its aim is to stop fake login pages before you type a password.

Safe-money style protection for online banking is part of the suite family, but check the feature list for your edition.

Tip: If a trusted site is blocked by mistake, add it to exclusions only after you are sure it is genuine.

Privacy tools and webcam protection

The suite includes controls aimed at privacy, such as webcam access protection and settings for how apps use sensitive resources.

These tools vary by edition and release, so confirm what your version includes after installing.

Parental controls

Parental controls let you limit screen time and block unsuitable websites. They are useful for a shared family PC.

Tip: Create a separate Windows account for each child, then apply the rules to those accounts only.

Free trial vs paid license

Feature	Free Trial	Paid License
Real-time malware protection	Yes, for the trial period	Yes
Ongoing updates after the trial	No	Yes
Support from Kaspersky	Limited	Yes
Cost	Free	Paid

Is Kaspersky Internet Security safe to install?

The installer on this page was checked with VirusTotal and came back clean.

The software itself is a mainstream security product. Whether to trust a vendor based in Russia is a personal and sometimes legal call, covered in the next section.

Who should skip it

Skip it if you want a permanently free antivirus, since this is a trial.

Also skip it if your employer, government or local rules restrict Kaspersky products. Windows’ built-in protection is the simpler choice if you only need the basics.

How to Download & Install

Click the download button at the top of this page to get the EXE installer. It is a 64-bit installer for Windows 11 and Windows 10.

Step 1: Remove any other antivirus first, since two real-time scanners on one PC cause conflicts.

Step 2: Double-click the downloaded EXE installer and approve the Windows permission prompt.

Step 3: Read the license agreement and privacy statement, then accept them to continue.

Step 4: Choose whether to take part in optional data sharing. You can decline it and still use the product.

Step 5: Let the installer finish. It may fetch extra components, so keep your internet connection on.

Step 6: Start the trial or enter your activation code when asked, then run a first full scan.

System requirements

Windows 11 or Windows 10, 64-bit (x64)
A working internet connection for installation, activation and updates
Enough free disk space and RAM for the suite plus its signature databases

License and activation

The product is a free trial, so full use after the trial period needs a paid activation code.

Enter the code in the activation window, or open the license section inside the app later. Keep the code from your purchase email in a safe place.

How to update

Threat databases update automatically in the background while you are online. To trigger it by hand, open the app and run the update from the main window.

For a newer program build, install the latest version of this page’s download over the old one. Your settings normally carry over.

Fixing common install problems

Installer stops early: Another antivirus is usually the cause. Uninstall it, restart Windows, then run the installer again.
Activation fails: Check your date, time and internet connection, then retype the code carefully.
Setup hangs while downloading components: Pause any VPN or proxy and retry on a stable connection.

Pros & Cons

What we liked

Layered malware and ransomware protection
Firewall and safe browsing included
Parental controls for family PCs
Free trial before you pay

What we didn't like

Trial only, full use needs a license
Regional availability and support vary
Some users avoid Russia-based vendors

Best Kaspersky Internet Security Alternatives

Bitdefender Total Security
Security suite with ransomware protection, VPN and parental controls for home PCs.
Norton 360
Antivirus suite with firewall, VPN and password manager in one subscription.
McAfee Total Protection
Antivirus, firewall, VPN and identity monitoring bundled into one paid security suite.
ESET Smart Security
Antivirus and firewall suite with gamer mode, anti-phishing and banking protection.

Conclusion

4.2out of 5 · 41 user ratings

Security suites differ a lot in price, features and platform support. The table below shows where Kaspersky Internet Security sits against three well-known options.

Look at price and the standout feature first, since those usually decide the choice.

App	Best For	Price	Platform	Standout Feature
Kaspersky Internet Security	Home users wanting a full suite	Free trial, then paid	Windows	Behavior-based detection with parental controls
Bitdefender Total Security	Households with mixed devices	Paid	Windows, macOS, Android, iOS	Multi-device coverage in one subscription
Norton 360	Users who want extras bundled	Paid	Windows, macOS, Android, iOS	Security bundled with VPN and backup tools
Microsoft Defender	Users who want built-in basics	Free	Windows	Built into Windows with no extra install

Final verdict

Kaspersky Internet Security is a capable suite for people who want malware protection, a firewall and parental controls in one place. The free trial makes it easy to test on your own PC.

If you need free long-term protection, or have concerns about the vendor’s location, Microsoft Defender or another suite may fit better.

Found a problem with this download? Report an outdated version, broken link, suspicious installer or incorrect information.

Kaspersky Internet Security