Malwarebytes Scanner vs Windows Security
Windows Security is free, already installed and genuinely competent. The comparison is not about which is better overall, but about what each one prioritizes.
Comparison
| Aspect | Windows Security | Malwarebytes |
|---|---|---|
| Cost | Included with Windows | Free scanner, paid real-time tier |
| Real-time protection | Yes | Paid tier only |
| Adware and PUP handling | Conservative | Aggressive |
| Offline / pre-boot scan | Yes | No |
| System integration | Deep | Application level |
| Second-opinion value | Low (it is the baseline) | High |
Running both
With the free scanner, Windows Security stays fully active and there is no conflict — this is the common home setup. If you enable paid real-time protection, Windows Defender Antivirus steps down to periodic scanning automatically, which is by design and not a problem.
Which to rely on
Keep Windows Security enabled regardless; it costs nothing and covers the baseline. Add Malwarebytes when you want stronger adware handling, scam-site blocking or a second opinion after an incident.
Frequently asked questions
Does installing Malwarebytes disable Windows Defender?
Only when its real-time protection is enabled, and only to passive periodic scanning. The free scanner leaves Defender fully active.
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