Best Antivirus for Windows 10 in 2026: ESU Picks After End of Support

Windows is still the single biggest target in consumer security. AV-TEST's lab logs more than 450,000 new malware samples every day as of Q1 2026, and the vast majority are Windows PE executables. Ransomware crews that used to hunt enterprises now run affiliate programs aimed at individuals, info-stealers like RedLine and Lumma hoover up saved browser passwords and session cookies, and malicious ads keep slipping through Google and Bing results.

Microsoft Defender covers the baseline — it scored a perfect 18/18 at AV-TEST April 2026 and is built into every Windows 10 and 11 install. But Defender ships with no VPN, no password manager, no identity theft restoration, and limited ransomware rollback. That gap is why paid suites are still worth buying in 2026, and why the order in which we rank them matters.

This is our current ranking of the best antivirus products for Windows 10 home users. We pull hard numbers from AV-TEST and the AV-Comparatives 2025 Summary Report, cross-check against community sentiment on r/antivirus, r/techsupport, and r/Windows10, and run each suite on a mid-range laptop for a week of real-world use. The nine products below are the ones we would install on our own machines today — and all officially support Windows 10 22H2, whether you are holding the line past its October 2025 end-of-life or have just moved to Windows 11.

This page focuses on Windows 10 users staying on 22H2 after end of support. If you have already moved to Windows 11, the same products apply, but the security baseline is different — see our best antivirus for Windows 11 guide.

Windows 10 in 2026: antivirus is not enough

Windows 10 reached end of support on October 14, 2025. Antivirus still matters, but it cannot replace operating-system security updates. If you stay on Windows 10 in 2026, the safe path is Windows 10 22H2 + Extended Security Updates + a current browser + a supported antivirus + a plan to migrate to Windows 11 or new hardware.

For most Windows 10 holdouts, buying first-year ESU and using Bitdefender, Norton, ESET or Microsoft Defender is a temporary bridge, not a long-term strategy. If the PC supports Windows 11, upgrade. If it does not, plan a hardware refresh instead of treating antivirus as a patch substitute. Microsoft’s own support page confirms Windows 10 support ended on October 14, 2025 and recommends upgrading to Windows 11 to maintain security over time. The detailed ESU options are further down this page.

Best safe Windows 10 setup in 2026

• Windows 10 22H2, enrolled in Extended Security Updates (ESU).
• Microsoft Defender, or a paid suite (Bitdefender, Norton or ESET).
• A current browser with automatic updates.
• A standard (non-admin) user account for daily work.
• An offline or cloud backup you actually test.
• A migration plan to Windows 11 or new hardware before October 13, 2026.

That stack treats antivirus as one layer, not a magic fix. The single most important line item is ESU — without it, no antivirus closes the holes that stop getting patched.

Who should not stay on Windows 10

Antivirus plus ESU is a reasonable bridge for a lot of people. It is not enough for everyone. Do not stay on Windows 10 in 2026 if:

• the PC is used for banking or business administration;
• it stores client or customer data;
• it is the everyday machine of a non-technical parent or senior;
• it cannot enrol in ESU;
• it has no working backup routine.

In those cases the safer move is migrating to Windows 11 or replacing the hardware now, not extending Windows 10 another year.

Best Antivirus for Windows 10 in 2026: Top Picks

Quick-glance table. Most products here scored 17.5/18 or 18/18 in AV-TEST's April 2026 Windows home-user cycle — detection at the top of the market is close to a solved problem. Sophos and Malwarebytes are included for specific use cases, but they are not directly comparable in the same AV-TEST home-user table, so their ranking relies on separate lab, product and hands-on evidence. The differences that matter are price, bundle, system impact, and corporate baggage.

Prices checked: June 2026. First-year and renewal prices change often by region, promo and checkout path.

The short version: pick Bitdefender if you want the best value without thinking about it. Pick Norton if you are in the US and want identity-theft restoration bundled. Pick ESET if your laptop is older or you hate seeing scans in Task Manager. Pick AVG if you want the Avast detection engine with a real firewall and ransomware shield in the paid tier. Pick Sophos Home if you want an enterprise-grade ransomware-rollback engine adapted for home use. Stack Malwarebytes Premium on top of Microsoft Defender if you refuse to pay for a full suite.

Which antivirus still supports Windows 10 22H2?

At our June 2026 check, every product in our top picks still listed Windows 10 22H2 support or continued Windows 10 compatibility, and most have committed to support windows that run past Microsoft’s ESU end date. Bitdefender, Norton, ESET, Avast, AVG, Kaspersky and Malwarebytes all run on Windows 10 22H2 and continue to ship engine and signature updates independent of the OS patch cycle. Microsoft Defender keeps getting cloud-delivered protection updates on Windows 10 even without ESU — one of the few security commitments Microsoft made on top of paid ESU. Sophos Home also runs on Windows 10, on its enterprise testing cadence. Vendor support windows and minimum versions can change and vary by region and product tier, so check the current system requirements on each vendor’s site before you rely on it.

One caveat matters more than the antivirus choice: antivirus support is not the same as OS support. These products catch malware that exploits a Windows 10 vulnerability; they cannot patch the vulnerability itself. That is what ESU is for — which is why our advice for any Windows 10 holdout is antivirus + ESU + a migration plan, not antivirus alone.

Best Windows 10 picks by situation

• Best overall: Bitdefender Total Security — top lab scores, light, full 22H2 support.
• Best free setup: Microsoft Defender + Malwarebytes Free on demand.
• Best for an old Windows 10 laptop: ESET (lightest) — or Bitdefender for stronger bundle value.
• Best ransomware protection: Sophos Home Premium (CryptoGuard rollback) or Bitdefender.
• Best family / multi-device: Norton 360 Deluxe, or AVG Internet Security (10 devices).
• US identity bundle: Norton (LifeLock-tier).
• On Windows 11 already? See our best antivirus for Windows 11 guide — the picks overlap, the security baseline does not.

Detailed Review of the Best Windows 10 Antivirus Picks

#1 — Bitdefender Total Security: Best Overall

Bitdefender keeps winning these rankings because it gets the fundamentals right and charges less than its peers. Total Security hit 18 / 18 at AV-TEST April 2026 (Top Product designation) and took Gold for Advanced Threat Protection in the AV-Comparatives 2025 Summary Report — the hardest category, covering multi-stage targeted attacks. Real-World Protection was Silver, a hair behind Norton.

First-year pricing is $19.99 for 5 devices. Renewal is $89.99 — still the lowest renewal among premium suites. The package includes the core engine, ransomware remediation with rollback, anti-tracker browser extension, webcam and microphone protection, a password manager, and a 200 MB/day VPN (unlimited VPN is a $30/year add-on). System impact in our tests stayed at 20-35% CPU during full scans and about 140 MB RAM idle — noticeably lighter than Norton or McAfee. Ideal for anyone who wants best-in-class detection without the upsell carousel. Full Bitdefender review.

#2 — Norton 360 Deluxe: Best Bundle

Norton is the only major consumer suite that bundles genuinely top-tier antivirus, unlimited VPN, 50 GB cloud backup, and LifeLock identity-theft restoration in one subscription. It scored 18 / 18 at AV-TEST Apr 2026 and took Gold for Real-World Protection in the AV-Comparatives 2025 Summary Report — the lab test that measures blocking of actual in-the-wild attacks, which is what matters for normal users browsing normal websites.

$49.99 first year for 5 devices. The honest caveat: renewal jumps to $119.99 on auto-renew, and Norton's own community forum has long-running threads about it. Manage renewal actively (cancel auto-renew day one, ask retention for a discount, or let-lapse-and-repurchase) and Norton is excellent value. Ignore renewal and it gets expensive. The pick for US users whose threat model includes identity theft. Full Norton review.

#3 — Microsoft Defender: The Free Baseline

Microsoft Defender comes with Windows 11 and Windows 10, runs with zero configuration, costs nothing, and scored 18 / 18 at AV-TEST April 2026. The detection gap that existed in 2017-2019 is gone. For a user who browses carefully, keeps software patched, and does not click phishing links, Defender alone is enough to handle commodity malware.

What you do not get: VPN, password manager, dark web monitoring, identity theft restoration, parental controls, ransomware rollback at the level of Bitdefender, or the heuristic depth of ESET on novel threats. Defender is the floor, not the ceiling. We recommend layering Malwarebytes Premium on top if you want a paid-quality setup without a full suite — details in the next section. Full Defender review.

#4 — Avast Free Antivirus: Best Free (Non-Microsoft)

Avast is the only non-Microsoft free antivirus we would install in 2026. AV-TEST Apr 2026 gave it 18 / 18, and the Avast/AVG shared engine logged a 5.5 impact in AV-Comparatives’ April 2026 Performance Test — among the lightest free options, with only ESET (4.2) and Kaspersky (3.5) lighter on the paid side.

The caveats are the ones you have heard: Avast was caught selling anonymized browsing data through its Jumpshot subsidiary in 2020, paid a $16.5 million FTC settlement in 2024, and was acquired by Gen Digital in 2022 (same parent as Norton, AVG, Avira, LifeLock). The current privacy policy prohibits the old practices, and there have been no fresh incidents since 2024. We trust it enough to run it; readers who do not should use Microsoft Defender instead. Ideal for users who want better heuristics than Defender's and are OK with Gen Digital as a parent company. Full Avast review.

#5 — AVG Internet Security: The Paid Avast-Engine Alternative

AVG runs the same detection engine as Avast (Gen Digital has owned both since the 2016 acquisition), but the Internet Security tier — not the free product — adds the things free Avast skips: a proper firewall, a Ransomware Protection module that locks unauthorized apps out of your Documents folder, AVG Network Inspector for router and IoT-device scanning, and Webcam Protection. AV-TEST April 2026 scored it 18 / 18, exactly tied with Avast since the engine is identical.

Pricing is $59.99 first year for 10 devices, $119.99 on renewal. The math vs Avast Premium Security: AVG IS is $7-$13 cheaper per year and covers twice as many devices on a single license. The case for AVG over Avast in 2026 is purely whether you prefer AVG’s slightly more conservative interface and slightly different default ad-tracker behaviour. Same Jumpshot-era trust caveats apply (the FTC consent order covering AVG Limited explicitly closed in 2024). Full AVG review.

#6 — ESET Home Security: Lightest on the System

ESET has the most loyal following of any product in this list, and the reason is simple: it stays out of the way. Our tests logged 6-22% CPU during full scans and 95-120 MB RAM idle — the lightest of the major suites, by a meaningful margin. AV-TEST Apr 2026 gave it 17.5 / 18 (one Usability point off, no false-positive disasters), and it shared Gold for Advanced Threat Protection with Bitdefender in the AV-Comparatives 2025 Summary Report.

Pricing is higher: $49.99 for the Internet Security tier, $59.99-$79.99 for Premium/Ultimate. No bundled VPN on the base tier (Ultimate has one). No identity-theft bundle. No cloud backup. What you pay for is a detection engine that handles targeted attacks as well as anything on the market, plus a host intrusion prevention system that power users can actually configure. Ideal for older laptops, gaming rigs where every CPU cycle matters, and users who prefer a clean interface to a feature carousel. Full ESET review.

#7 — Kaspersky Premium: Lab-Best Detection, With a Warning

US users — important: the U.S. Department of Commerce banned new Kaspersky sales and updates in the United States effective September 29, 2024. Existing installs have been redirected to UltraAV (an Arizona-based replacement) or uninstalled. If you are in the US, do not buy Kaspersky. Skip to #6 Malwarebytes or back to #1 Bitdefender.

Technically, Kaspersky remains the best pure detection engine in this list. It took 18 / 18 at AV-TEST Apr 2026 and double Gold at AV-Comparatives 2025 (Real-World Protection and Advanced Threat Protection). No other consumer product has won both top categories in a single year since 2019. For users outside the US — Europe, UK, Canada, Asia, Australia — Kaspersky Premium at $49.99 first year is a legitimate pick, especially if the ransomware-rollback and safe-banking features matter to you. Full Kaspersky review.

#8 — Sophos Home Premium: Enterprise CryptoGuard for Home

Sophos Home Premium is the only home antivirus that ships with a stripped-down version of Intercept X, the enterprise endpoint engine that runs on hundreds of millions of business endpoints worldwide. The headline differentiator is CryptoGuard: a ransomware-rollback layer that monitors for mass file modifications and reverts encrypted files to clean copies kept in a protected cache. Bitdefender and Kaspersky have similar capabilities; Sophos was the first to commercialize it for consumers (originally as HitmanPro.Alert before the 2017 acquisition).

Sophos has opted out of AV-TEST Home User testing since 2023 (publicly disputes their methodology), so you cannot directly compare lab scores to the rest of this list. SE Labs and AV-Comparatives Business test data is excellent — treat that as the proxy. Pricing is $44.99 first year for 10 devices, with a comparatively gentle $59.99 renewal (only $15 uplift, the lowest renewal multiplier we measured across the Top 9). Configuration is unusual: most settings live in the cloud-based Sophos Central dashboard rather than the local app. Useful if you manage your parents’ PC remotely; awkward if you only own one machine. Full Sophos review.

#9 — Malwarebytes Premium: The Second-Opinion Layer

Malwarebytes is not a full antivirus suite and does not pretend to be. It is designed to run alongside another real-time engine (Defender or a paid suite) and catch what slipped through. The full rules for safe on-demand pairings (and which combos break) are in our dedicated guide — adware, PUPs, browser hijackers, and post-infection persistence. AVLab named it Product of the Year 2026, and it is the single most-recommended second layer on r/antivirus and r/techsupport.

At $44.99 first year for 5 devices, the Premium tier adds real-time protection, ransomware shield, web protection, and exploit mitigation on top of the classic on-demand scanner. Pair it with Microsoft Defender and you get a protection level comparable to Bitdefender Total Security at roughly half the total feature surface (no VPN, no password manager, no backup). Ideal as a layer, not a replacement. Full Malwarebytes review.

Microsoft Defender on Windows 10: enough or not?

We get this question weekly, and the honest answer is: it depends on who you are. Defender hit 18/18 at AV-TEST April 2026. Its cloud-delivered protection learns from every Windows machine on the planet, which is the largest telemetry feed in consumer security. For commodity malware — the stuff an average user might encounter via a malicious ad or a bundled installer — Defender catches it at rates indistinguishable from paid suites.

Where Defender falls short:

• No identity / dark-web monitoring. If your email and password surface in a breach dump, Defender will not tell you. Norton and McAfee will.
• No VPN. If you use coffee shop Wi-Fi regularly, bundle VPN access costs $5-$10/month separately.
• Weaker on targeted and novel threats. AV-Comparatives 2025 Real-World Protection placed Defender behind Norton, Bitdefender, Kaspersky, ESET, and Avast. The gap is real but small — tens of samples out of thousands.
• Limited ransomware rollback. Controlled Folder Access exists but requires manual setup per application. Bitdefender and Kaspersky automate this.
• No password manager (the Edge browser's built-in manager is not the same thing).

Best free stack: Microsoft Defender (on by default) + Malwarebytes Free as an on-demand second-opinion scanner — zero cost, and enough for most people. Best low-cost stack: Microsoft Defender + Malwarebytes Premium ($44.99/year) only if you specifically want a second real-time layer and know how to avoid overlap and conflicts. Defender catches commodity threats; Malwarebytes adds novel / post-infection cleanup. For where Defender stands on its own, see is Windows Defender good enough.

On Windows 10 specifically: Defender keeps getting cloud-delivered protection updates even without ESU — but it protects the apps layer, not the operating system. After October 14, 2025, the weak link on a Windows 10 machine is the unpatched OS, not Defender. Put plainly: Defender updates reduce malware risk, but they do not patch Windows 10 vulnerabilities — a Windows 10 PC without ESU stays exposed even with a fully up-to-date antivirus. That is why our Windows 10 stack is Defender (or a paid suite) plus ESU, not antivirus alone. The Windows 11 24H2 hardware-security stack — Smart App Control, HVCI and Pluton — now lives on our best antivirus for Windows 11 page.

Windows 10 ESU vs upgrading to Windows 11

Microsoft pulled the plug on free Windows 10 support on October 14, 2025. Mainstream feature updates stopped, and the regular monthly security-patch cadence ended for anyone who had not opted into Extended Security Updates (ESU). Eighteen months later, that decision still affects a large share of active Windows machines — StatCounter still showed Windows 10 on roughly a quarter of desktop Windows systems in 2026, with Windows 11 holding the clear majority. If you are reading this on a Windows 10 PC in 2026, you have three live options.

Option 1: Pay for ESU. Microsoft opened a paid Consumer ESU program for the first time in October 2025. For consumers, Microsoft offered a one-year ESU path for Windows 10 22H2 through October 13, 2026, with enrollment options that varied by region and account setup — free if you sync your PC settings with Windows Backup, 1,000 Microsoft Rewards points, or a one-time fee of about $30 (one license covers up to 10 devices). Commercial ESU is a separate, multi-year paid program. Check Microsoft’s current ESU page for your edition, region and account before quoting a price. ESU buys you critical and important security patches for the OS itself — nothing more. No new features, no UI changes, no driver updates.

Option 2: Free ESU through Microsoft Account sync. Microsoft also offers a free first-year ESU path for consumers who back up their PC settings via OneDrive (you have to sign into a Microsoft Account). This is the option for households on a budget who can stomach the cloud-sync requirement. Year two and three are not free under this path — they revert to paid pricing.

Option 3: Buy a Windows 11 PC or migrate. The Win10 → Win11 migration tool still works for hardware that meets the Win11 minimum (TPM 2.0, 8th-gen Intel or Ryzen 2000+ CPU, 4 GB RAM, Secure Boot). If your hardware fails any of those checks — common for laptops sold before 2018 — the upgrade path is blocked. Replacing the machine is the realistic answer.

Where antivirus fits in this decision. The good news: every product in our Top 9 still officially supports Windows 10 in 2026, and most have committed to support windows that extend well past Microsoft’s ESU end date. Bitdefender, Norton, ESET, Kaspersky, Avast, AVG, Sophos, Malwarebytes, and Microsoft Defender itself all run on Win10 22H2 and continue to receive engine and signature updates independent of the OS patch cycle. Microsoft Defender keeps getting cloud-delivered protection updates on Windows 10 even without ESU — that is one of the few security commitments Microsoft made on top of paid ESU.

The bad news: third-party antivirus cannot fix unpatched OS vulnerabilities. If a Windows 10 kernel CVE is disclosed in March 2026 and you do not have ESU, every Win10 machine on Earth without ESU is exposed forever. Antivirus catches malware that exploits the vulnerability; it does not close the vulnerability itself. Skipping ESU on a Win10 machine you actually use for banking and email is a calculated risk — not the same risk profile as running unpatched XP in 2015, because cloud-AV detection is much better, but a real risk nonetheless.

Our recommendation if you are staying on Windows 10 through October 2026: buy the $30 first-year ESU (or take the free OneDrive-sync path), keep Microsoft Defender enabled, and add either Bitdefender Total Security ($19.99) or the Defender + Malwarebytes Premium stack on top. Total cost for a year: $50 to $75. Consumer ESU enrollment options currently provide updates through October 13, 2026, and commercial ESU is a separate paid program; for a 4+ year-old machine, a hardware refresh is the realistic move rather than stretching it further. Consumer ESU is a one-year bridge to October 13, 2026 — not a long-term Windows 10 security strategy.

How Did We Rank These Windows Antivirus Picks?

Our rankings combine four inputs. No single one dominates — a product that wins labs but is a misery to actually run does not make the top 3.

1. Independent lab test scores. AV-TEST April 2026 (Windows Home User cycle) and AV-Comparatives 2025 Summary Report. These are the two labs whose methodology we trust for home-user scenarios. SE Labs is excellent but publishes less frequently. We weight Real-World Protection (which measures actual drive-by and phishing attacks) higher than File Detection on static samples.
2. Hands-on testing on a mid-range Windows 11 laptop. Intel i5-12450H, 16 GB DDR5, NVMe SSD — representative of what most readers actually use. We install each suite clean, run a full scan, time it, log CPU and RAM, browse the EICAR and Hybrid Analysis test URLs, try to install a PUP bundler, and time a boot. One week minimum per product.
3. Community sentiment. r/antivirus, r/techsupport, r/Windows11, and product-specific subreddits. We do not quote individual users, but we do read the complaint patterns. Uninstall problems, renewal pricing shock, aggressive upsells, and broken features show up on Reddit months before labs reflect them.
4. Vendor-specific news and policy changes. The Kaspersky US ban, the Avast Jumpshot / FTC settlement, the Gen Digital consolidation — corporate events change the risk picture for users even when detection scores do not move.

We update this ranking quarterly. The current cycle reflects data from AV-TEST’s April 2026 Windows Home test and the AV-Comparatives 2025 full-year Summary Report (published February 2026), refreshed against community sentiment through the most recent month.

A note on how close the top is, and how we read the labs: in the AV-Comparatives Malware Protection March 2026 test, online protection at the very top was within a hair — Norton, McAfee and Kaspersky at 99.97%, Microsoft 99.93%, Bitdefender 99.94% — so false positives (Microsoft 3, Bitdefender 4, Norton 9, McAfee 14) become a meaningful tiebreaker. We keep the three AV-Comparatives tests in their own lanes: Malware Protection (March 2026) measures detection and false positives; Real-World Protection (February–March 2026) measures blocking of live in-the-wild attacks; and the Performance Test (April 2026) measures system-speed impact only — not protection. AV-TEST’s April 2026 round covers protection, performance and usability; it is labelled for Windows 11 but runs on current Windows, and the same engines run on Windows 10 22H2, which is what we test on hands-on.

Windows Antivirus Buying Guide

Four questions to run through before you buy.

1. How many devices, and what kind? A single Windows laptop with no phone is a different buy than a household with five phones, three laptops, and an iPad. Single-device users on a budget should look at Bitdefender Antivirus Plus ($29.99/year, 1 PC) or the free Defender + Malwarebytes stack. Households of 3-5 devices want Bitdefender Total Security or Norton 360 Deluxe. Households of 6-10 devices want AVG Internet Security or Sophos Home Premium — both cover ten devices on a single license. Households of 12+ devices that mix Windows, macOS, Android, and iOS should still consider unlimited-device suites; those sit outside our 2026 Top 9 (see Also Tested).

2. Do you need a VPN? If you work from coffee shops, travel, or care about ISP tracking, yes. Norton 360 (all tiers above AntiVirus Plus) includes unlimited VPN. McAfee+ includes unlimited VPN. Bitdefender Total Security caps at 200 MB/day — unlimited is a separate $30/year purchase. ESET's Ultimate tier includes a VPN, base tiers do not. If you already pay for ExpressVPN or Mullvad, skip the bundled VPN and prioritize detection instead.

3. Do you need identity theft protection? If you are in the US and have experienced credit fraud or are on the record with a breached company, LifeLock's human restoration specialists are the differentiator — available only in Norton 360 Advanced tier and up. McAfee+ includes Identity Monitoring (alerts you about breaches) but not restoration. Outside the US, LifeLock is not offered, and the Norton bundle is less compelling.

4. Free or paid? The honest decision tree:

• If you want zero friction and zero cost: Microsoft Defender alone. Works, covers commodity threats, no install needed.
• If you want free-plus-better: Microsoft Defender + Malwarebytes Premium ($44.99). Close to premium-suite protection, no VPN or identity layer.
• If you want the best single purchase: Bitdefender Total Security at $19.99 first year.
• If you want the full bundle: Norton 360 Deluxe at $49.99 first year (US, with LifeLock tier considerations).
• If you want enterprise-grade ransomware protection: Sophos Home Premium at $44.99 first year (CryptoGuard rollback engine).

5. Windows 11 or Windows 10? And what hardware? If you are on Windows 11 24H2 with a Pluton-equipped CPU and a clean install, Microsoft Defender alone is materially stronger than it was on Win10 — SAC, HVCI, and Memory Integrity all close attack surface that Defender historically depended on a third-party AV to cover. Adding paid antivirus still measurably helps (heuristics, identity, ransomware rollback) but the marginal gain is smaller than on Win10. If you are on Windows 10 in 2026, the calculation flips: Defender on Win10 still works, but the OS itself is no longer getting free patches as of October 14, 2025. Buying ESU (or taking the free OneDrive-sync path) plus a paid antivirus is the safer 2026 stack until you can move to Win11 hardware.

Skip anything not on this list. TotalAV, Scanguard, PC Protect, and the various Protected.net brands that dominate Google Ads are marketing-led products with weaker detection and aggressive renewal practices. Use our comparison tool to cross-check any product your browser recommends.

Also Tested

Two products we cover in full but did not place in the Top 9 for Windows in 2026.

McAfee+ Premium — also strong but not ranked: best for unlimited devices, not best Windows 10 value. McAfee+ is the only major suite that offers unlimited household devices on a single $49.99 first-year subscription — phones, laptops, tablets, all of it. AV-TEST April 2026 scored it 18 / 18; AV-Comparatives 2025 was less flattering (Bronze Real-World Protection, Bronze Performance, behind the leaders but still Advanced+). The reason it dropped out of our Top 9 this cycle: every other suite on this list with a 5- or 10-device cap covers the realistic majority of households for less money on renewal, and McAfee’s renewal jumps to $119.99 (steepest in the bundle tier we cover). The install also still pre-checks third-party browser-extension toolboxes during setup — pay attention to the checkboxes. If you genuinely have 12+ active devices in one household and per-seat math wrecks your budget on Bitdefender or Norton, McAfee+ remains the right answer. For everyone else, the Top 9 ranking above is sharper.

360 Total Security — not recommended in US or NATO households. The product runs a multi-engine scanner with Bitdefender + Avira modules, but the Beijing-based vendor (Qihoo 360) was added to the U.S. Department of Commerce Entity List in June 2020 over national-security concerns — we cannot recommend it for U.S. or NATO households at any price. Outside those jurisdictions, see our review for the full breakdown.

Antivirus vs phishing and scams on Windows

Malware detection is only one layer. Many Windows users lose accounts or money through phishing pages, fake support pop-ups, malicious ads, fake installers, QR scams and remote-access scams where no traditional malware file is needed.

If that is your main risk, compare web protection, browser-extension quality, scam warnings, identity monitoring and call/text protections instead of ranking products only by malware scores. For scam-heavy households, Norton or McAfee can make more sense than a lighter malware-only setup, depending on region and platform coverage. We break the category down in best antivirus for scam protection.

Free vs paid antivirus on Windows

Free protection is enough for careful users on an updated Windows 11 PC. Paid suites make sense when you need cross-device coverage, ransomware rollback, VPN, identity monitoring, parental controls, a password manager, scam protection, premium support or easier family management.

Do not buy paid antivirus just because “Defender is bad.” Buy it because the paid product solves a specific gap Defender does not cover. For the full breakdown, see free vs paid antivirus and the best free antivirus options.

Frequently Asked Questions

Does Windows 10 still need antivirus in 2026?

Yes — and arguably more than before. After end of support on October 14, 2025, Windows 10 no longer gets free monthly security patches, so the safe setup is a current antivirus plus Extended Security Updates plus a modern browser. Microsoft Defender or a paid suite both work as the antivirus layer; neither one replaces the OS patches that ESU provides.

Is Bitdefender better than Norton?

At AV-TEST April 2026 they tied at 18/18. At AV-Comparatives 2025, Bitdefender won Gold for Advanced Threat Protection, Norton won Gold for Real-World Protection — both top-tier, both targeting slightly different attack types. Bitdefender is cheaper ($19.99 vs $49.99 first year), lighter on system resources, and has a simpler interface. Norton has the bigger bundle: unlimited VPN, 50 GB cloud backup, LifeLock identity-theft restoration (US). Pick Bitdefender for best pure value. Pick Norton if you want the full-suite bundle and are in the US. Full breakdown: Bitdefender vs Norton.

Can I run two antivirus programs at the same time?

Two real-time antivirus engines will fight each other, crash services, and leave you less protected than either one alone. Windows automatically disables Microsoft Defender's real-time protection when you install a third-party antivirus, which is the correct behavior. The one exception: Malwarebytes Premium is engineered to run alongside another real-time product. That is the only layered stack we recommend. Do not install Norton on top of Bitdefender, or McAfee on top of ESET, or any other two-suite combination. More detail: should I run two antivirus programs.

How much should I pay for antivirus in 2026?

$20 to $40 for the first year on a premium 5-device suite is the realistic range if you buy during intro pricing. Bitdefender Total Security is the low end at $19.99; Norton 360 Deluxe and McAfee+ Premium sit at $49.99. Renewal pricing is the trap: expect renewals of $80-$120 if you auto-renew. Budget accordingly or set a calendar reminder to cancel auto-renew and repurchase. Anything over $70 for a single year of a consumer suite is overpriced unless it includes a genuine identity-restoration service like LifeLock.

Is free antivirus safe to use?

Microsoft Defender is genuinely safe — it is a first-party Microsoft product that runs on billions of Windows machines and has no ad-supported business model behind it. Avast Free Antivirus is safe in terms of detection (18/18 at AV-TEST), but comes with Gen Digital as the parent company and a history we discuss in the Avast entry above. Skip all other "free" antivirus downloads — Smart Defender, System Shield, PC Cleaner, and the countless Google Ads imitators are at best ad-ware and at worst outright malware.

Why is Kaspersky banned in the US?

The U.S. Department of Commerce issued a Final Determination in June 2024 prohibiting Kaspersky Lab from providing antivirus software or cybersecurity services in the United States, citing national security concerns about Russian government access. New sales were blocked after July 20, 2024; software updates and signature delivery stopped September 29, 2024. Kaspersky's US customers were migrated to UltraAV (a US-based replacement) or prompted to uninstall. The ban does not apply to users outside the US; Kaspersky Premium remains available and legitimate to buy in Europe, the UK, Canada, Asia, and Australia.

Will antivirus slow down my PC?

Modern antivirus on modern hardware has a small but real cost. In our hands-on tests on a mid-range Windows 11 laptop: ESET used 6-22% CPU during full scans, Bitdefender 20-35%, Norton and McAfee 30-45%. Idle RAM usage ranged from 95 MB (ESET) to 220 MB (Norton). On hardware from 2020 or newer you will not notice any of them during normal use; on pre-2018 laptops with spinning drives, the impact is visible. ESET and Bitdefender are the lightest of the premium suites.

Does antivirus protect against ransomware?

Partially. Modern signature and behavioral engines catch the majority of ransomware at the execution stage — Bitdefender, Kaspersky, and Norton have dedicated ransomware-rollback features that can reverse encrypted files if a strain slips through. But the single most effective defense is an offline or cloud backup that the ransomware cannot reach. Antivirus is your first line; a 3-2-1 backup (three copies, two media, one offsite) is what actually gets you through a worst-case ransomware event. Norton bundles 50 GB of cloud backup for a reason.

Should I buy Windows 10 ESU or migrate to Windows 11?

If your hardware passes the Win11 compatibility check (TPM 2.0, 8th-gen Intel or AMD Ryzen 2000+, Secure Boot, 4 GB RAM minimum) and you have time for a clean reinstall, migrate now — Windows 11 24H2 ships SAC, HVCI, and Pluton-rooted security defaults that Win10 cannot match. If your hardware fails the check, Microsoft’s one-year Consumer ESU path keeps Windows 10 22H2 patched through October 2026 — enrollment options vary by region: free if you sync your PC settings with Windows Backup, 1,000 Microsoft Rewards points, or a one-time fee around $30, covering up to 10 devices. Commercial ESU is a separate multi-year program. The honest break-even on a 4+ year-old machine is year-one ESU plus a hardware-refresh plan for late 2026, not a long ESU runway.

Is antivirus enough for Windows 10 after end of support?

No. Antivirus does not replace OS security patches. If you stay on Windows 10 in 2026, use ESU where available, a modern browser, current antivirus and a migration plan.

Should Windows 10 users buy ESU or antivirus first?

Security updates come first. Antivirus helps, but an unpatched OS remains risky. Use ESU plus antivirus if you cannot upgrade immediately.

Is Microsoft Defender enough for Windows 10?

It still works as an antivirus, but that is not the question that matters on Windows 10 in 2026. Defender updates reduce malware risk; they do not patch Windows 10 vulnerabilities. Without ESU, the PC stays exposed even with a current antivirus, so the safe answer is Defender (or a paid suite) plus ESU, not Defender alone.

What is the best antivirus for an old Windows laptop?

ESET or Bitdefender are better picks than heavier bundles. Also consider replacing a spinning hard drive with an SSD before blaming antivirus for all slowness.

Final Verdict + Our #1 Pick

Our pick for the best Windows 10 antivirus is Bitdefender Total Security. It ties the top of the lab rankings, charges less than any comparable premium suite at $19.99 first year, stays light on system resources, and renews at the most reasonable rate ($89.99) in the premium tier. If you want one product to buy and stop thinking about, it is this one. Read the full Bitdefender review.

Runners-up, depending on what you need:

• Best bundle (US): Norton 360 Deluxe — $49.99 first year, unlimited VPN, 50 GB backup, LifeLock-tier options.
• Lightest on the system: ESET Home Security — if your hardware is older or you run CPU-intensive work.
• Outside the US, lab-best detection: Kaspersky Premium — double Gold at AV-Comparatives 2025.
• Best paid Avast-engine alternative: AVG Internet Security — $59.99 first year, 10 devices, real firewall and ransomware shield.
• Enterprise-grade ransomware protection: Sophos Home Premium — CryptoGuard rollback engine, $44.99 first year, 10 devices.
• Best free stack: Microsoft Defender + Malwarebytes Premium — closest a free-plus-cheap setup gets to premium-suite protection.
• Holding the line on Windows 10 in 2026: Bitdefender Total Security plus Consumer ESU (one-year path — free via Windows Backup sync, Microsoft Rewards, or about $30). A temporary bridge until you can move to Win11 hardware.

Whatever you pick, two rules: disable auto-renew on day one (every premium suite has renewal-pricing inflation), and back up your important files somewhere the antivirus is not the only line of defense. Good luck out there.

Setting up a PC for a parent or grandparent? See our best antivirus for seniors guide for simple, scam-focused picks.

Want a no-cost Windows option? See our dedicated best free antivirus picks.