Do I Need Both Avast and Malwarebytes
Most users do not need to install both Avast and Malwarebytes at the same time. Both are strong security tools, but they overlap significantly in core antivirus protection while differing in emphasis, performance impact, and additional features. Running both can introduce competition between real-time shields, higher resource use, and conflicting security alerts. Instead of automatically running both, choose based on your threat model, system performance, and feature needs, and rely on complementary practices like updates and safe browsing.
Avast and Malwarebytes at a Glance
Avast is a full-featured antivirus and security suite with real-time protection, firewall, browser cleanup, password manager, and VPN. Malwarebytes focuses on anti-malware, anti-ransomware, anti-exploit, and adware removal, offering lighter, on-demand scanning alongside endpoint protection modules. Below is how key attributes compare.
| Attribute | Avast | Malwarebytes | Source Type |
|---|---|---|---|
| Core protection | Antivirus with real-time shields | Anti-malware with proactive exploit defense | Vendor documentation |
| Additional features | Firewall, browser cleanup, password manager, VPN | Anti-ransomware, adware removal, web protection | Feature pages |
| Performance impact | Moderate to higher depending on suite load | Generally lightweight, lower on-demand impact | Independent lab tests and reviews |
| Free vs paid | Feature-limited free tier; paid adds full suite | Free anti-malware; Premium adds proactive exploit and web protection | Pricing pages |
| Best fit | All-in-one security for less technical users | Targeted malware remediation and supplementary protection | Expert analysis and user feedback |
How They Overlap and Where They Differ
Avast and Malwarebytes share the fundamental goal of protecting you from malicious software, yet they approach security differently. Avast positions itself as a comprehensive security suite, bundling antivirus, firewall, browser protection, and privacy tools. Malwarebytes positions itself as an anti-malware specialist, emphasizing detection of threats that evade traditional antivirus, including adware, PUPs, and sophisticated ransomware techniques.
Because both attempt real-time monitoring, running both simultaneously can cause contention. Their shields may clash over which process inspects a file first, leading to delayed launches or blocked actions. In terms of detection, Avast benefits from a larger malware database and heuristic analysis, while Malwarebytes often excels at zero-day and exploit-based threats through behavior monitoring. Neither product officially endorses running both in real-time mode, and some advanced features can interfere with each other.
Feature Overlap
Core antivirus/anti-malware scanning is the most significant overlap. Both monitor files and downloads for known malicious patterns and behaviors. Where they diverge is in additional modules. Avast adds a firewall, secure browser, password manager, and VPN (usually in paid tiers). Malwarebytes adds anti-ransomware, anti-exploit, and scheduled or manual anti-adware scans. If you need a firewall or VPN, Avast covers those needs directly; if you want specialized anti-adware or lightweight on-demand scanning, Malwarebytes fills that role.
Performance and Usability
Avast’s full suite can be heavier on system resources, particularly on older machines, because it loads multiple real-time modules. Malwarebytes typically consumes fewer resources, especially when used for on-demand scans rather than constant real-time blocking. If you notice sluggishness or delays after installing both, removing one real-time shield will usually restore responsiveness. Avast’s interface centralizes many tools, which some users prefer for convenience, while Malwarebytes offers a cleaner, focused experience aimed at malware removal and prevention.
When Running Both May Make Sense
There are narrow scenarios where using both Avast and Malwarebytes can be reasonable, provided you configure them carefully to avoid conflicts. These setups are situational and not required for the average user.
- Layered defense for high-risk activities such as frequent downloads from less-trusted sites or opening email attachments from unknown senders.
- Using Avast as your primary always-on antivirus and scheduling weekly on-demand Malwarebytes scans to catch stubborn adware and emerging malware.
- Running Malwarebytes in its free, manual mode purely as a second-opinion scanner while disabling any conflicting real-time components.
In each case, you should disable real-time shields in one product or ensure they run in a way that avoids interference. Treat this as an advanced configuration, not a default setup.
When You Should Choose One or the Other
For most people, choosing one primary protection tool is simpler and more effective. If you want an all-in-one suite with extras like VPN and password management, Avast Premium is a strong choice and can reasonably cover most needs on its own. If you prefer a lightweight, anti-malware–focused tool to add a second opinion on top of an existing antivirus, Malwarebytes Premium is designed for that role without turning your system into a crowded security environment.
Consider your technical comfort, performance tolerance, and how you use the PC when deciding. If you are unsure, start with the free version of each, run sequential scans, and observe system behavior and detection results before committing to paid versions or running both constantly.
Practical Recommendations and Best Practices
Regardless of whether you run one or both products, solid security depends on habits and foundational practices more than stacking tools. Keep your operating system and applications updated, use strong passwords and multi-factor authentication, back up important data, and exercise caution with downloads and email attachments. Security software is most effective as part of a broader defense-in-depth strategy.
- Pick one real-time antivirus product and stick with it to avoid shield conflicts.
- If you like Avast’s suite, evaluate whether add-ons like firewall and VPN genuinely benefit you or remain unused.
- If you favor Malwarebytes, use scheduled or on-demand scans weekly or after high-risk activities rather than running a competing real-time guard.
- Monitor system performance after installation; if slowdowns occur, remove or reconfigure overlapping components.
- Export and review periodic reports to confirm detections, false positives, and scan history.
Frequently Asked Questions
- Can I install both Avast and Malwarebytes? Yes, but it is not recommended to run both real-time shields simultaneously due to potential conflicts and increased resource use.
- Is it safe to run Avast and Malwarebytes together? It can be safe if you disable real-time protection in one tool or configure them carefully, though conflicts may still occur.
- Which is better, Avast or Malwarebytes? They serve slightly different strengths: Avast suits users who want an all-in-one suite, while Malwarebytes excels as a focused anti-malware and anti-exploit tool.
- Will running both slow down my computer? Running both real-time products can increase CPU, disk, and memory usage, potentially slowing the system.
- How often should I scan with Malwarebytes if I have Avast? If you choose to use both, schedule Malwarebytes to run weekly or after high-risk activities, avoiding constant simultaneous real-time scanning.