Best Antivirus for Windows – Free Antivirus Software

Is your Antivirus doing a great job for you?

Dozens of antivirus programs exist, with varying prices and different levels of effectiveness. Comodo Antivirus offers total PC protection for free, not some stripped down version of a paid product. You can easily scan any drive or file, get in-depth reports on viral activity and detect suspicious files, with our user-friendly interface.

Comodo Antivirus has been built with intelligence: it recognizes typical viral behavior. Antivirus, upon detecting a suspicious file that could be a virus, will immediately place that file in "Antivirus Jail": the file is blocked, awaiting trial. If it's a viral invader, delete it. Comodo Antivirus also includes a mechanism for user to submit any files look suspicious to the Safe List and get immediate feedback on possibly viral files from our security experts and other PC-users.

5 key secrets why Comodo Antivirus is different

• Proactive "intelligent" protection intercepts unknown threats
• Automatic updates for the most current virus protection
• Easy to use interface lets you install and forget: no annoying pop-ups or false alarms
• Isolation of all suspicious files eliminates the chance of PC contamination
• Defense + technology constantly protects you

System Requirements:
Windows XP S2 and higher
152 MB RAM / 400 MB hard disk space

Release Details:
Release Date: June 8, 2015. Please see latest release notes

Comodo Antivirus Awards:

Best Antivirus Important Features

Default Deny Protection™

Makes sure that only known PC-safe applications execute

Prevention-based security

Stops viruses and malware before they access your computer…so it isn't too late to stop them.

Auto Sandbox Technology™

The sandbox is a virtual operating environment for untrusted programs – ensuring viruses and other malicious software are completely isolated from the rest of your computer

Full strength, top notch virus detection and elimination

Our download offers Free Antivirus protection that exceeds the protection offered by expensive security suites

Quarantine system to isolate suspicious files

Possible viruses are kept executing to ensure that nothing "sneaky" gets through

Personalized protection

Set virus scans to run on a schedule, when it's convenient for you

Spyware Scanning

Spyware Scanner detects and cleans malware infections in PC registry and disks.

Cloud based Antivirus

Cloud based antivirus scanning detects malicious file even if a user does not have up-to-date virus definitions.

Cloud based Behavior Analysis

Cloud based behavior analysis system detects zero-day malware INSTANTLY.

Cloud based Whitelisting

Cloud based whitelisting of trusted publisher easily identifies a safe file and vendor

Game Mode

Suppresses operations that could interfere with a user’s gaming experience such as alerts, virus database updates or scheduled scans.

Application Control

Provides users with the ability to lockdown their PC so only known good applications can run.

One-click scanning

Make sure your PC is clean with one simple button click

Easy and user-friendly interface

Simply install and forget, while Antivirus continues to protect

Real-time access to updated virus definitions

Get the most current protection possible against new viral strains

Unique "slider" to easily change your current security level

Change the behavior of Antivirus to reflect your security preferences at any given time

Get the most from Antivirus with Comodo Internet Security Pro 8

FAQ about Download Antivirus for Windows

Why do I need Antivirus Software installed on my PC?

A virus can be absolutely devastating to your PC's health. They can slow your computer to a halt, delete important files and applications, and even make your computer unusable.

So why should I use this Antivirus?

Our Antivirus download features top-notch antivirus protection, for free! Real-time scanning, online updates, quarantine protection, total virus deletion...it's all here.

How does the Antivirus protection work?

Just click a button when you'd like to scan for viruses. When Antivirus detects one, it kills it. Dead. Gone.

What is "quarantine protection"?

When Antivirus finds what it thinks can be a virus, it immediately puts the possible virus in a quarantine state where it can't do any damage. It's extra protection from the trickier viruses.

What do you mean by 'personalized protection'?

Antivirus lets you schedule scans for viruses whenever it's most convenient. It does the same thing for updates on the latest viruses.

Do you offer any upgrades?

Yes. Comodo Internet Security (including Antivirus) is available in Plus and Pro versions – featuring 24 hour per day Live Support, TrustConnect and the Comodo Virus-Free guarantee.

Will programs run OK in the Sandbox?

Yes. Applications in the sandbox are run under a carefully selected set of privileges and will write to a virtual file system and registry instead of the real system. This means untrusted (but harmless) applications have the freedom to operate as usual while malicious programs are prevented from accessing or infecting your computer. This provides smoothest and most secure user experience possible.

Do programs stay in the Sandbox forever?

No – the sandbox is the first part of a trust decision engine. After an unknown application has been placed in the sandbox, Internet Security will also automatically queue it for submission to Comodo labs where it will be analyzed by our technicians. If it is found to be harmless then it will be added to the global safe list that will be downloaded by all Internet Security users in the next round of updates. Once it is added to the safe list, the application will no longer be run in the sandbox by Internet Security. If it is found to be malicious then it will be added to Comodo's list of malware signatures and will be deleted after the next round of updates.

Get the most from Antivirus with Comodo Internet Security Pro 8

Support

For more information, check out the Antivirus user manual, visit our forums or send us an email.

Download the User Guide
Here you'll find detailed technical information about the free Antivirus Software.

Visit the Knowledgebase
The support forum contains easy-to-find answers to many common questions.

Email Support
If you cannot find an answer within the manual or knowledgebase please email us at desktopsupport@comodo.com for further assistance.

Submit malware
Send malicious files to our AV Labs for examination. Submit files to Comodo for analysis.

View latest threats
Our AV Labs around the world publish existing, newly detected or recently modified virus definitions.

Report false positives
Use this form to report a file you believe has been incorrectly classified as suspicious.

Trusted Vendors
Request the addition of your software to the Trusted Vendor List that ships with Comodo Antivirus.

*Please note that phone support is not available for free products.

Get the most from Antivirus with Comodo Internet Security Pro 8