Free Antivirus for Windows in 2026
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Quick comparison of nine antivirus products by availability, protection and features, platform, and quick info.| Product | Availability | Protection & Features | Platform | Quick Info |
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| Avast Free Antivirus ↗ | Free | 🛡️ Antivirus · Malware · Web Protection | Windows | Free edition |
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| Panda Dome Free ↗ | Free | 🛡️ Antivirus · Real-Time Protection · USB Protection · VPN | Windows | VPN limitations may apply |
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| Bitdefender Antivirus Free ↗ | Free⭐1-Year Offer | 🛡️ Antivirus · Malware · Ransomware · Web/Threat Protection | Windows | Claim 1-Year Free Trial |
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| Sophos Home ↗ | 30-Day Trial | 🛡️ Antivirus · Malware · Ransomware · Web Protection | Windows · macOS | Premium trial |
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| AVG Antivirus Free ↗ | Free | 🛡️ Antivirus · Malware · Web Protection | Windows | Free edition |
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| Avira Free Security ↗ | Free | 🛡️ Antivirus · Malware · Privacy Tools | Windows · macOS · Android · iOS | Free edition |
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| Microsoft Defender ↗ | Included | 🛡️ Antivirus · Malware · Firewall · Real-Time Protection | Windows | Built into Windows |
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| Norton Antivirus ↗ | Trial/Paid | 🛡️ Antivirus · Malware · Web Protection · Scam Protection | Windows · macOS · Mobile | Plan-dependent features |
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| Malwarebytes Free ↗ | Free | 🛡️ On-Demand Malware Scanning · Threat Removal | Windows | Free scanning and cleanup |
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Availability and features can vary by edition and plan. Bitdefender’s 1-year offer is separate from its ongoing Free edition; confirm eligibility and renewal terms before activation.
1. Avast Free Antivirus — a separate Windows option with strong test results
Avast Free is a separately installed Windows option for readers who want another security app rather than relying only on Windows’ built-in protection. Choose the named Free edition: Avast also sells paid plans, and a shared brand name does not mean the same features are included. Confirm the current U.S. download, supported Windows versions, and included tools before setup.
During installation, review optional components, privacy settings, and paid-upgrade offers instead of accepting every prompt automatically. After setup, let the app update and check Windows Security to confirm the active provider and protection status. Keep one primary real-time antivirus unless the vendors explicitly support using both together.
AV-TEST’s May–June 2026 Windows 11 consumer round evaluated Avast Free Antivirus 26.4 & 26.5 on Windows 11 Professional (English, 64-bit) using default settings. Avast received 6/6 for Protection, 6/6 for Performance, and 6/6 for Usability. Those results describe that edition under those test conditions; they do not certify every feature in a plan, predict a later version, or guarantee protection on every device. Match the edition and date when comparing scores. For more on free antivirus, see our related guide.
Sources: AV-TEST: Avast Free Antivirus 26.4 & 26.5 · Avast: Free Antivirus download
The “1” in the image matches Avast’s #1 position in this guide. The 8.6 rating and displayed offer belong to the review publisher, not AV-TEST or IZenica.User-supplied review excerpt; feature claims belong to the publisher and may not match Avast’s current offer.Paid Premium edition shown; the Avast Free interface and included tools may differ.User-supplied publisher opinion; it is not an IZenica support assessment or a current service commitment.Third-party ratings for context; these are not AV-TEST scores or IZenica test results. - Best fit: a Windows user who wants a separate ongoing free app and will review its settings.
- Trade-off: free features, supported Windows versions, and optional paid offers can change.
- Evidence: AV-TEST Free Antivirus 26.4 & 26.5; Windows 11 Pro, 64-bit; May–June 2026.
2. Panda Dome Free — understand the one-device Windows offer
Panda’s U.S. download table lists its free edition for one Windows device; paid Dome plans sit beside it, including offers with a free first month. The Windows feature page lists real-time antivirus, USB scanning, Rescue Kit, and a VPN limited to 150 MB per day. Treat that allowance and device cap as part of the offer, not as unlimited multi-device coverage. For more on free antivirus software for Windows 11, see our related guide.
Check the exact edition before downloading: Panda’s broader platform pages also describe Android tools and paid features, which are not automatically included in the U.S. Windows free plan. AV-Comparatives included Panda Free Antivirus in its July–August 2025 real-world protection test and September 2025 performance test; the latter measures speed impact, not threat protection. Those dated tests are useful context, not a guarantee of 2026 results on every PC.
Sources: Panda Security: Panda Dome Free · AV-Comparatives: Real-World Protection Test, July–August 2025 · AV-Comparatives: Consumer Performance Test, September 2025
The “2” in the image matches Panda’s #2 position in this guide. The 8.0 rating and feature notes belong to the review publisher, not IZenica or an independent lab.Third-party description for context; check Panda’s current U.S. offer for today’s platform and plan limits.User-supplied app screenshot; its interface may be from an older release and does not independently verify protection.The praise and feature summary are the publisher’s; this guide uses current plan details rather than adopting its review text.These category scores come from the review publisher, not AV-TEST, AV-Comparatives, or IZenica. - Best fit: one Windows PC where a separate free product and USB checks are useful.
- Trade-off: one device, Windows-only availability, and a daily VPN cap; confirm which features are free.
3. Bitdefender Antivirus Free — a basic Windows-only choice
Bitdefender’s U.S. page presents Antivirus Free as an ongoing Windows download, separate from paid Antivirus Plus and Total Security. The page describes basic protection and a free VPN allowance of up to 200 MB per device each day. Check the current feature list before installing; this is a single-platform free product, not a multi-device family subscription.
The supplied images show more than one edition: the review card promotes paid Antivirus Plus, while the desktop screen is Total Security. AV-TEST’s June 2026 Bitdefender result is also for Total Security 27.0, so we do not apply that score to Antivirus Free. The review publisher’s scores and product claims are labeled separately below.
BEITDEFENSE separately promotes the Bitdefender 1-year free-trial offer through the CTA on the supplied review card. That promotion is not the ongoing Antivirus Free edition or a benefit shared by every product here. The card links to the store homepage rather than displaying full terms; confirm the exact product, eligibility, device coverage, renewal price, and cancellation conditions on the offer page before activation.
Sources: Bitdefender: Antivirus Free · AV-TEST: Bitdefender Total Security 27.0
The “3” in the image matches Bitdefender’s #3 position in this guide. The card promotes paid Antivirus Plus, not Antivirus Free; its rating and badge belong to the publisher. The green trial link opens the homepage for offer terms.Third-party review text for context, not an IZenica finding; the free and paid editions are evaluated separately in this guide.Paid Total Security interface, not a screenshot of Antivirus Free; the visible account and status belong to the supplied image.User-supplied third-party summary; its feature claims and testing opinions are not current vendor documentation or IZenica test results. - Best fit: one Windows PC where an ongoing no-cost Bitdefender product is enough.
- Trade-off: the free edition is not the paid multi-device suite shown in two of these screenshots.
4. Sophos Home — a trial, not an ongoing free edition
The current Sophos Home page describes Windows and macOS security and offers a free trial alongside paid Premium. That can be useful for evaluating the product, but a time-limited trial should not be counted as an always-free antivirus plan.
Sources: Sophos Home: plans and free trial
The “4” in the image matches Sophos Home’s #4 position in this guide. The displayed price, 7.6 rating, and commentary belong to the review publisher; check Sophos for current terms.These feature and platform descriptions are the review publisher’s claims; they do not establish current plan coverage. Check Sophos’s official terms.User-supplied Sophos Home Premium interface showing a 30-day trial. A paid Premium trial is not an ongoing free edition, and this screenshot is not current vendor terms.The 7.6 overall rating and category scores are from the review publisher, not AV-TEST or IZenica. - Best fit: someone who wants to evaluate Sophos Home before paying.
- Trade-off: review what remains active when the trial ends and whether a paid plan is required.
5. AVG AntiVirus Free — another independently tested alternative
AVG maintains a free antivirus product, and AV-TEST evaluated Antivirus Free 26.4 & 26.5 in the same May–June 2026 consumer cycle. It received 6/6 in protection, performance, and usability.
Compare its current interface and free feature list with Avast’s before choosing. There is little reason to install two real-time antivirus products at once; pick one, follow its official setup instructions, and confirm that Windows reports protection is active.
Sources: AV-TEST: AVG AntiVirus Free 26.4 & 26.5 · AVG: AntiVirus Free
The “5” in the image matches AVG’s #5 position in this guide. Its 7.6 rating and commentary are the publisher’s assessment, not AV-TEST or IZenica findings.The support and feature statements are from the review publisher; current free features and support terms may differ.Supplied AVG Free app screenshot. Passive Mode is on, and Computer and Web & Email show Not Protected; this illustrates a disabled real-time state, not active protection.Mobile-app features and offer limits are the publisher’s description; verify AVG’s current terms for each platform.The 7.6 overall rating and category scores are from the review publisher and are separate from AV-TEST’s product-specific lab results cited above. - Best fit: users who prefer AVG’s current product experience.
- Trade-off: its lab result is a snapshot of the tested version, and add-on features can change.
Avira offers free antivirus downloads and links to separate Mac, Android, and iOS products. Do not assume the Windows app’s feature set or protections carry over unchanged to another device; review the page for each platform.
AV-Comparatives’ 2025 consumer test list names Avira Free Antivirus. That is useful evidence that the free product was evaluated in that series, but its report should be read directly for the test period and edition rather than treated as a current guarantee.
Sources: Avira: Free Antivirus for Windows · AV-Comparatives: Consumer Summary Report 2025
The “6” in the image matches Avira’s #6 position in this guide. The displayed price, 7.6 rating, and feature notes are the publisher’s snapshot, not independent-lab results or a guarantee of today’s offer.The overall and category scores, along with the surrounding feature and lab commentary, belong to the supplied review publisher; they are not AV-TEST or AV-Comparatives results. - Best fit: someone comparing free products across more than one operating system.
- Trade-off: platform features and free limits can differ; confirm each one before installing.
More Windows antivirus choices: built-in protection, trials and scans
The final three options add built-in Windows protection, a time-limited suite trial, and a free scanner. Their positions continue the supplied review-card sequence, not a combined lab ranking. Verify each official page for current editions, device limits, and trial or renewal terms.
7. Microsoft Defender — built into Windows
Windows 11 includes Microsoft Defender Antivirus, so there is no separate product to buy or installer to find. It is the most straightforward choice if you want a built-in baseline and do not need a third-party account or a broader cross-device package.
In AV-TEST’s May–June 2026 Windows consumer test, Microsoft Defender Antivirus (Consumer) scored 6/6 for protection, 5.5/6 for performance, and 6/6 for usability. Those results are a dated test snapshot, not a promise that every future version or device will behave identically.
Sources: Microsoft: Windows Security and Defender · AV-TEST: Windows 11 consumer results, June 2026
User-supplied Windows Security screenshot showing one Quick scan with no threats found. It describes that scan only; it does not guarantee that the device is free of threats. - Best fit: a supported Windows PC with current Windows and browser updates.
- Trade-off: it is not a single free subscription that covers every family device and operating system.
8. Norton 360 — a trial is not an ongoing free plan
The supplied Norton 360 screenshots show an app with 23 days left in a trial, along with security dashboard and scan screens. They document one trial state and individual scan results; they do not establish an ongoing free edition, current plan entitlements, or protection after the trial ends. Check Norton’s current U.S. terms before relying on a feature or offer.
Sources: Norton U.S.: current products and offers
The supplied Norton screen shows one Quick Scan item marked quarantined and a trial countdown of 23 days. This is a snapshot, not an independent efficacy test or proof of current free coverage.User-supplied Norton 360 dashboard captured with 23 days left in the trial. The displayed tools do not confirm which features are included in today’s plan or remain active after a trial.User-supplied Password Manager screen at the vault-unlock step; no password is shown. It illustrates a separate password-management interface, not antivirus coverage.The supplied capture shows one targeted scan of 114 items with no risks found. A result for one selected folder is not a full-device guarantee or an independent lab result.Saved-login rows have been obscured before publication to protect privacy. This screen shows the Password Manager interface, not antivirus features. - Best fit: someone considering Norton who wants to check the current plan and trial terms.
- Trade-off: the screenshots show a time-limited trial state and do not demonstrate ongoing free protection.
9. Malwarebytes Free — useful for scanning and cleanup
Malwarebytes’ current download page offers free scanning and malware removal for Windows, with separate pages for other platforms. Check the precise free feature set for the device you use; an on-demand scan and continuous real-time protection are not interchangeable.
Sources: Malwarebytes: Free scanning and removal
Historical Premium 3.0.6 interface supplied for context. It is not evidence that the current Free plan includes Premium real-time protections, and the old scan summary says nothing about a reader’s device.This older Premium settings screen illustrates controls in that release, not the current Free feature set or a recommended configuration.Historical Premium 3.0.6 scan choices are shown for interface context only; available scans and plan features can differ in current releases.A supplied historical scan snapshot, not a current detection count, performance measurement, or assessment of the reader’s device.This old sample result is not a current Malwarebytes detection claim and does not indicate what is on another user’s device. - Best fit: a user who wants to scan for and remove malware.
- Trade-off: verify whether the free version provides always-on protection before relying on it as the only security layer.
Free Antivirus, Built-In Protection, Scanners, and Trials
The ongoing no-cost Windows options in this comparison include Microsoft Defender, Avast Free Antivirus, Panda Dome Free for one Windows device, Bitdefender Antivirus Free for Windows, and AVG AntiVirus Free. Avira offers platform-specific free products. Malwarebytes Free is described here as an on-demand scanner and cleanup tool, not as an equivalent to always-on antivirus protection.
Sophos Home and Norton 360 are presented as time-limited paid-product trials, not ongoing free editions. Check each vendor’s current feature list, device limit, eligibility, and renewal terms before installing or activating an offer.
Choosing an Antivirus for Windows
There is no single best choice for every Windows PC. Microsoft Defender is already included with Windows 11; another user may prefer a separate free edition, an on-demand scanner, or a paid suite. Compare the exact product edition, supported Windows version, device limit, and included features before choosing.
This guide does not combine independent lab results into one score. The numbered sequence follows the supplied review cards, and every cited lab result is tied to its named product edition and test period.
Bitdefender Antivirus Free and the BEITDEFENSE 1-Year Offer
Bitdefender Antivirus Free is an ongoing Windows-only edition. Antivirus Plus and Total Security are different products; the paid-product screenshots and Total Security lab result in this guide are not evidence about Antivirus Free.
The BEITDEFENSE promotion is separate from the editorial product comparison. The supplied CTA labels a Bitdefender Antivirus 1-year free trial and links to the store homepage. Its image does not state the full eligibility, device coverage, renewal price, or cancellation terms, so verify those details on the linked offer page before starting. IZenica Technologies LLC has partnered with Bitdefender to offer and sell Bitdefender antivirus software through BEITDEFENSE.com; IZenica Technologies LLC does not own Bitdefender.
