Windows remains the sole desktop platform where antivirus software continues to play a crucial role. While Microsoft has patched many vulnerabilities over the years, the operating system still allows installations from unverified sources, opens attachments, and connects to networks that may not be trustworthy. As we look ahead to 2026, Norton 360 stands out as the premier antivirus solution for Windows, boasting an extensive feature set and the fastest full scan times recorded. Bitdefender, on the other hand, is slightly more expensive but demands significantly less from system resources, making it an ideal choice for older PCs.
Best Antivirus for Windows 2026: Shortlist
In the realm of antivirus software, five paid options emerge alongside Microsoft Defender, which is available at no cost. The following list highlights the top contenders, with prices reflecting first-year rates in USD:
- Norton 360: Best overall antivirus for Windows. It completed a full scan in just 13 minutes and 22 seconds, outperforming all competitors while offering a robust firewall and up to 250 GB of cloud backup.
- Bitdefender: Best for older PCs. It maintained peak CPU usage at 11% and memory at 183 MB during a full scan, making it the lightest option available.
- Avast One: Best free antivirus for Windows 11. The free version achieved a perfect score in AV-TEST, proving its effectiveness without the need for a paid upgrade.
- NordVPN Threat Protection Pro: Best for users already subscribed to a VPN. This version provides comprehensive protection without the limitations of the Lite version found on other platforms.
- McAfee+: Best for households with numerous devices. It offers unlimited coverage under one subscription, although it is the slowest scanner in this comparison.
- Microsoft Defender: Best free option already included with Windows. It received a Top Product award from AV-TEST and provides essential protection at no cost.
Best Antivirus for Windows: The Full Reviews
When evaluating antivirus solutions, several factors come into play, including independent lab results, performance impact on the system, the value of bundled extras, pricing for two years, and the ease of dealing with the vendor. The following reviews delve into the top choices:
Norton 360: Best Antivirus for Windows Overall
Rating: 4.8/5⭐
Norton excels in coverage and reliability, consistently submitting to independent labs for evaluation. It is the only vendor that guarantees a refund if its technicians cannot remove an infection from your PC. This pledge applies across all tiers, including the entry-level AntiVirus Plus at .99.
Norton on Windows: The Specifications
| Windows Versions | Windows 11 and Windows 10 |
| Devices | 1 on AntiVirus Plus, up to 10 on Select Plus |
| Windows-Specific Features | Smart Firewall, cloud backup up to 250 GB, parental controls |
| Free Trial | 7 days |
| Refund Window | 60 days |
| First Year | .99 to .99 by tier |
| Renewal | .99 to 9.99 |
How Norton Performed Against Malware
Norton achieved a 99.8% detection rate with minimal false alarms during testing. Independent lab results corroborate its effectiveness, with AV-Comparatives reporting a 96.3% offline detection rate and a 99.97% online protection rate.
What Norton Costs Your PC
The quick scan took just 58 seconds, while a full scan across both drives required 13 minutes and 22 seconds. Although Norton demands more resources during a scan, it remains efficient during everyday use.
The Extras Worth Having on Windows
Norton’s Smart Firewall is among the best available, providing detailed and user-friendly controls. Its cloud backup feature is a standout, offering effective ransomware protection by storing clean copies of files away from potential threats.
Norton Pricing and the Renewal Problem
| AntiVirus Plus | Standard | Deluxe | Select Plus | |
| First Year | .99 | .99 | .99 | .99 |
| Renewal | .99 | .99 | 4.99 | 9.99 |
Should You Put Norton on Your PC?
Yes, if you seek comprehensive coverage for your household and can manage the renewal process. Norton’s speed and completeness are unmatched in this category.
Bitdefender: Best Windows Antivirus for Older Machines
Rating: 4.7/5⭐
Bitdefender is the lightest antivirus measured, making it ideal for older machines. It recorded the fewest false alarms in independent tests, further solidifying its reputation.
Bitdefender on Windows: The Specifications
| Windows Versions | Windows 11 and Windows 10 |
| Devices | 1 or 3 on Antivirus Plus, up to 25 across 5 accounts on Family |
| Windows-Specific Features | Safepay isolated browser, multi-layer ransomware remediation |
| Free Trial | 30 days |
| Refund Window | 30 days |
| First Year | .99 to .99 |
How Bitdefender Performed Against Malware
Bitdefender achieved a 99.8% detection rate with only a few false alarms, making it a strong contender in malware protection.
What Bitdefender Costs Your PC
With a quick scan time of just over a minute and a full scan taking 14 minutes, Bitdefender is efficient while maintaining low resource usage.
The Extras Worth Having on Windows
Bitdefender’s Safepay feature provides a secure browsing environment for banking, while its Autopilot feature ensures optimal security settings without user intervention.
Bitdefender Pricing
| Plan | First Year | Full Price | Devices |
| Antivirus Plus | .99 | .99 | 1 or 3 devices |
| Total Security | .99 | 9.99 | 5 devices |
Should You Put Bitdefender on Your PC?
Yes, particularly for older machines where performance is a concern. Bitdefender’s lightweight design ensures it won’t hinder your system’s capabilities.
Avast One: Best Free Antivirus for Windows 11
Rating: 4.3/5⭐
Avast One’s free version has proven itself in independent tests, achieving a perfect score without requiring payment. Its modular pricing allows users to add features as needed.
Avast on Windows: The Specifications
| Windows Versions | Windows 11 and Windows 10 |
| Devices | 1 desktop plus 1 mobile on the entry paid plan |
| Free Version | Permanent, no card required |
How Avast Performed Against Malware
Avast recorded a 99.78% detection rate with a minimal number of false alarms, demonstrating its reliability.
What Avast Costs Your PC
Avast’s scanning times are competitive, making it a practical choice for users who prioritize efficiency.
The Extras Worth Having on Windows
Avast’s Ransomware Shield and AI Agent Protection are standout features, enhancing security without additional costs.
Avast Pricing
| Plan | First Year | Renewal | Devices |
| Avast Free | Free | Free | 1 |
| Paid, 2 devices | .99 | .99 | 1 desktop + 1 mobile |
Should You Put Avast on Your PC?
Use the free version if you are the sole user on one PC and are cautious about what you install. Consider paid modules for additional features as needed.
NordVPN Threat Protection Pro: Best If You Already Pay for a VPN
Rating: 4.0/5⭐
NordVPN’s Threat Protection Pro is not a conventional antivirus but provides essential protection against malware and phishing while inspecting downloads and URLs.
NordVPN on Windows: The Specifications
| Windows Versions | Windows 11 and Windows 10 |
| Devices | 10 simultaneous connections |
How NordVPN Performed Against Malware
In testing, NordVPN blocked 90% of malware samples, with strong performance against phishing URLs.
What NordVPN Costs Your PC
With the protection layer active, NordVPN has minimal impact on system resources, making it a lightweight option.
The Extras, and Three Documented Gaps
NordVPN excels in ad and tracker blocking, but it has limitations, such as not scanning downloads made in incognito mode on macOS.
NordVPN Pricing
| Plan | Promotional Term | Renewal |
| Complete | .49/mo | 9.48/yr |
Should You Put NordVPN on Your PC?
Consider it if you already pay for a VPN and want integrated malware protection. However, it should not be the sole security solution for a family PC.
McAfee+: Best for Households That Lost Count
Rating: 3.9/5⭐
McAfee is designed for households with numerous devices, offering unlimited coverage under one subscription, although it is the slowest scanner in this comparison.
McAfee on Windows: The Specifications
| Windows Versions | Windows 11 and Windows 10 |
| Devices | 5 on Essential, unlimited on Premium |
How McAfee Performed Against Malware
While McAfee performed well online, it struggled with offline detection, highlighting a significant gap in its capabilities.
What McAfee Costs Your PC
McAfee’s scans are the slowest and most resource-intensive, which may be a concern for users with older machines.
The Extras Worth Having on Windows
McAfee’s Personal Data Cleanup and Scam Detector features are valuable additions, helping users manage their online presence and protect against scams.
McAfee Pricing
| Plan | First Year | Renewal |
| Essential | .99 | 9.99 |
| Premium | .99 | 9.99 |
Should You Put McAfee on Your PC?
Opt for McAfee when managing a high number of devices, but be cautious if parental controls or offline performance are priorities.
Also Ranked: Microsoft Defender, the One You Already Have
Rating: 4.1/5⭐
Microsoft Defender is included with Windows and has improved significantly, earning a Top Product award from AV-TEST. However, it lacks coverage for devices outside of Windows.
When Defender Is Genuinely Enough
Defender is suitable for single users on a Windows PC who practice safe browsing and keep software updated. However, it falls short in multi-device households or for users needing advanced features.
Windows Antivirus Comparison: All Six Side by Side
| Norton 360 | Bitdefender | Avast One | NordVPN TPP | McAfee+ | Defender | |
| Best For | Overall | Older PCs | Free and gaming | VPN owners | Device count | Doing nothing |
| Full Scan | 13:22 | 14:03 | 14:38 | No scanner | 16:47 | Not measured |
| Peak CPU | 23% | 11% | 12% | 0.2% idle | 33% | Not measured |
| Offline Detection | 96.3% | 97.6% | 96.3% | N/A | 86.1% | 89.2% |
| First Year | .99 | .99 | Free or .99 | .49/mo | .99 | Free |
| Renewal | 4.99 | 9.99 | .99 | 9.48 | 9.99 | Free |
What Windows 11 Already Protects You From
Windows 11 includes several built-in security features, such as Smart App Control, TPM 2.0, and Controlled Folder Access, providing a competent defense against various threats. However, it does not cover phishing attempts, data breaches, or the security of connected devices.
Windows 10 After End of Support
With the end of mainstream support for Windows 10, the need for a robust antivirus solution becomes even more critical. Users should prioritize software with strong offline detection capabilities to mitigate risks associated with unpatched vulnerabilities.
Free vs Paid Antivirus for Windows
While free antivirus solutions like Avast Free Antivirus have demonstrated effectiveness in independent tests, they often lack the comprehensive features offered by paid options. Users must weigh the benefits of added features such as firewalls, ransomware protection, and dedicated support when making their choice.
Scam Protection Has Become the Real Battleground
As the landscape of cybersecurity evolves, the focus has shifted from traditional malware detection to protecting users from scams and phishing attempts. Many antivirus providers now offer features specifically designed to combat these threats, highlighting the importance of comprehensive security solutions.
How to Choose Antivirus Software for Windows
When selecting antivirus software, consider factors such as independent lab scores, performance impact, bundled features, and vendor support. Understanding the strengths and weaknesses of each option can guide users toward the best choice for their needs.
Windows Antivirus to Avoid
Kaspersky has been barred from selling software in the U.S. due to supply chain concerns, rendering it unusable despite its strong performance metrics.
