In 2025, online threats are evolving faster than ever. From phishing attacks and ransomware to hidden malware, cyber criminals are constantly targeting Windows PCs. That’s why choosing the best antivirus software for Windows is crucial—whether you’re on Windows 10 or Windows 11.
But with so many free and paid options out there, which one should you trust? In this guide, we’ll review the top antivirus software for Windows in 2025, compare their features, and help you find the right protection for your device.
What to Look for in Antivirus Software
Not all antivirus programs are the same. When choosing the best protection for your Windows PC, keep these key factors in mind:
- Real-Time Protection – What is real-time protection?
- Malware & Ransomware Defense – Ransomware explained by Kaspersky
- System Performance – Lightweight software that won’t slow down your PC.
- Pricing – Free antivirus vs premium options.
- Extra Features – VPN, firewall, password manager, parental controls.
Best Free Antivirus Software for Windows in 2025
1. Avast Free Antivirus
- Excellent malware detection rate.
- Includes Wi-Fi security scanner & password manager.
2. AVG Free Antivirus
- Strong protection against phishing and malware.
- Includes email shield and real-time updates.
3. Microsoft Defender (Built-in)
- Comes pre-installed on Windows 10 and 11.
- Improved real-time defense.
4. Bitdefender Free Edition
- Excellent malware detection with little system impact.
Best Paid Antivirus Software for Windows in 2025
1. Norton 360 Deluxe
- Malware, phishing, and ransomware protection.
- Includes VPN, password manager, and cloud backup.
2. Kaspersky Internet Security
- High detection rates.
- Includes parental controls and privacy protection.
3. Bitdefender Internet Security
- Firewall, webcam protection, VPN included.
4. McAfee Total Protection
- Multi-device protection with identity monitoring.
5. ESET NOD32 Antivirus
- Lightweight and fast, ideal for gamers.
Comparison Table: Free vs Paid Antivirus
| Antivirus Software | Free/Paid | Key Features | Best For |
|---|---|---|---|
| Microsoft Defender | Free | Built-in, real-time protection | Basic everyday users |
| Avast Free | Free | Malware protection, Wi-Fi scanner | Budget users |
| Bitdefender Free | Free | Lightweight, great detection | Simple protection |
| Norton 360 Deluxe | Paid | VPN, password manager, backup | Families, businesses |
| Kaspersky Internet | Paid | Parental controls, strong defense | Parents, privacy users |
| McAfee Total Prot. | Paid | Cross-device, identity protection | Multi-device users |
| ESET NOD32 | Paid | Lightweight, fast | Gamers, professionals |
Lightweight Antivirus Options for Old PCs
FAQs
- Is Windows Defender enough in 2025? → PCMag review of Windows Defender
- What’s the difference between free vs paid antivirus? Free covers basics, while paid adds VPNs, identity protection, and parental controls.
- Can antivirus stop ransomware? Paid solutions like Norton and Bitdefender are highly effective.
Our Recommendation
Cyber threats in 2025 are more advanced, making antivirus software essential for Windows users.
- Free: Microsoft Defender or Avast Free Antivirus.
- Paid: Norton 360 Deluxe or Bitdefender Internet Security.
👉 Stay updated and practice safe browsing to maximize protection.
