Download Malwarebytes Free – Complete Malware Removal and PC Protection Guide

What is Malwarebytes?

Malwarebytes (formerly Malwarebytes Anti-Malware) is a world-leading malware scanner and PC protection software developed by Malwarebytes Inc., a cybersecurity company headquartered in Santa Clara, California, USA. It is trusted by millions of users and businesses worldwide, with over 500 million downloads as of 2026.

Unlike traditional antivirus software that relies solely on signature-based detection, Malwarebytes uses behavioral detection technology and artificial intelligence to detect and block the latest threats — including malware, ransomware, spyware, adware, trojans, rootkits, and zero-day attacks.

Malwarebytes runs alongside other antivirus software such as Windows Defender, Kaspersky, or Bitdefender without conflicts, providing an extra layer of protection for your computer.

History of Malwarebytes

Malwarebytes was founded in 2008 by Marcin Kleczyński — a Polish-American software engineer. After his mother's computer became severely infected with malware that no existing tool could remove, Kleczyński decided to build a better solution himself.

Key development milestones:

• 2008: Malwarebytes Anti-Malware 1.0 launched, gaining acclaim for superior malware removal
• 2011: Reached 100 million downloads, expanded macOS support
• 2016: Released version 3.0 with multi-layered protection, ransomware and exploit protection
• 2018: IPO on the New York Stock Exchange (NYSE: MBWY), introduced Malwarebytes Nebula for businesses
• 2020: Integrated AI and machine learning into threat detection engine
• 2023-2026: Malwarebytes 5.x with modern interface, enhanced real-time protection, behavior-based zero-day detection

Key Features of Malwarebytes

Malwarebytes offers a comprehensive set of features to protect your computer against all online threats:

Comprehensive Malware Scanning and Removal

Malwarebytes can detect and remove virtually every type of malicious software:

Multi-Layer Detection Technology

Malwarebytes combines multiple detection technologies to ensure no threat goes unnoticed:

Real-Time Protection (Premium)

Malwarebytes Premium delivers comprehensive real-time protection:

• Web Protection: Blocks malicious and phishing websites
• Malware Protection: Automatically scans and blocks malware when downloading files or opening applications
• Ransomware Protection: Safeguards personal files from ransomware encryption
• Exploit Protection: Prevents exploitation of browser, Java, and PDF vulnerabilities
• Advanced Threat Protection: Detects and blocks targeted attacks

User-Friendly Interface

Malwarebytes features an intuitive interface suitable for both beginners and experts:

• Dashboard: Overview of protection status, recent scan results
• Scanner: Scan options (Quick, Full, Custom)
• Real-Time Protection: Status of each protection layer
• Quarantine: List of isolated threats
• Reports: Scan and detection history

Flexible Scan Modes

Malwarebytes offers multiple scan modes for different needs:

Safe Quarantine and Recovery

When Malwarebytes detects a threat, it quarantines malicious files instead of deleting them immediately:

• Quarantined files are encrypted and cannot execute
• View all threats in Quarantine
• If it's a false positive, Restore the file easily
• Permanently delete threats after confirmation

Browser Guard

Malwarebytes includes Browser Guard — a browser extension that protects you while browsing:

• Blocks malicious ads and pop-ups
• Prevents phishing websites
• Blocks third-party trackers
• Warns about suspicious websites
• Compatible with Chrome, Firefox, Edge, Opera

How to Download and Install Malwarebytes

How to Download Malwarebytes Free

Download Malwarebytes from the official website using the Download button at the top of this article. Malwarebytes comes in two editions:

• Malwarebytes Free (recommended to try): Manual scan and removal, no real-time protection
• Malwarebytes Premium: Full real-time protection, automatic scanning, ransomware protection (14-day free trial)

Additional download sources:

• Official site: malwarebytes.com/download
• Microsoft Store: Search for "Malwarebytes"
• macOS (Homebrew): brew install --cask malwarebytes

System Requirements

Installing Malwarebytes on Windows

1. Download the installer: MBSetup.exe (~200MB)
2. Run the installer: Double-click the downloaded file
3. Allow UAC: Click Yes when prompted for Administrator privileges
4. Choose language: Malwarebytes supports Vietnamese
5. Choose edition: Select Free (14-day Premium trial available, cancel anytime)
6. Install: Automatic installation, no intervention needed
7. Finish: Click Get Started and follow the prompts

Tip: During installation, you will be offered a 14-day Malwarebytes Premium trial. If you don't want it, cancel immediately in Settings > Account.

Installing Malwarebytes on macOS

1. Download the .dmg file from malwarebytes.com
2. Open the .dmg file and drag Malwarebytes to Applications
3. Launch Malwarebytes from Launchpad
4. Grant required permissions when prompted (Full Disk Access)
5. Complete setup and start scanning

macOS note: Malwarebytes requires Full Disk Access to scan your entire hard drive. Go to System Preferences > Security & Privacy > Privacy > Full Disk Access and add Malwarebytes.

Installing Malwarebytes on Android

1. Open Google Play Store
2. Search for "Malwarebytes Security"
3. Tap Install
4. Open the app and follow the instructions to grant Accessibility permissions
5. Tap Scan to start

Installing Malwarebytes on iOS

1. Open the App Store
2. Search for "Malwarebytes"
3. Tap Get
4. Open the app, grant call and SMS permissions
5. Malwarebytes will automatically block spam and phishing calls

Getting Started with Malwarebytes

Running Your First Malware Scan

After installation, run a full scan immediately to ensure your computer is clean:

1. Open Malwarebytes
2. Click the Scanner tab
3. Choose Quick Scan or Full Scan
4. Click Scan and wait for the scan to complete
5. Review the list of detected threats
6. Click Quarantine to isolate all threats

Handling Scan Results

When the scan completes, Malwarebytes displays the list of detected threats:

• Detected Threats: Number of threats found
• Threat Type: Type of malware (Trojan, Adware, PUP, etc.)
• Location: Infected file path
• Action: Recommended action (Quarantine, Ignore)

You have three options:

1. Quarantine (recommended): Isolate malicious files
2. Ignore: Skip if you are sure it is a false positive
3. Delete: Permanently remove (cannot be restored)

Viewing and Managing Quarantined Threats

Go to Detection History or Quarantine to view:

• All previously quarantined threats
• Detection date and threat type
• Restore option (in case of false positive)
• Delete option (permanent removal)

Scheduling Automatic Scans (Premium)

The Premium version allows scheduling automatic scans:

1. Go to Settings > Scheduler
2. Enable Enable scheduled scans
3. Choose frequency: Daily, Weekly, Monthly
4. Select time and scan type
5. Click Save

Advanced Usage Guide

Customizing Protection Settings

Malwarebytes allows detailed customization of each protection layer:

Web Protection:

• Block malicious websites
• Block phishing websites
• Block ad trackers

Malware Protection:

• Scan files on download
• Scan files on execution
• Scan removable devices (USB)

Ransomware Protection:

• Protect office documents, photos, videos
• Protect default folders
• Add custom protected folders

Exploit Protection:

• Protect browsers (Chrome, Firefox, Edge)
• Protect Java and PDF readers
• Protect browser plugins

Adding Files and Folders to the Allow List

If Malwarebytes falsely detects a safe file as malware (false positive), add it to the allow list:

1. Go to Settings > Allow List
2. Click Add
3. Choose Allow File or Allow Folder
4. Browse to the file or folder
5. Click OK

Warning: Only add exclusions when you are certain the file is safe. Excluding executable files (.exe, .dll) may put your computer at risk.

Using Malwarebytes Command Line

Malwarebytes supports command-line operations for IT administrators:

# Quick scan from command line
"C:\Program Files\Malwarebytes\Anti-Malware\mbam.exe" /scan

# Full scan
"C:\Program Files\Malwarebytes\Anti-Malware\mbam.exe" /scan /full

# Update database
"C:\Program Files\Malwarebytes\Anti-Malware\mbam.exe" /update

Malwarebytes for Business

Malwarebytes offers enterprise-grade solutions:

• Malwarebytes Nebula: Cloud-based centralized security management
• Malwarebytes Endpoint Protection: Endpoint protection for businesses
• Malwarebytes Managed Detection and Response (MDR): Managed threat detection and response service

Malwarebytes vs Other Antivirus Software

Malwarebytes vs Windows Defender

Malwarebytes vs Kaspersky

Malwarebytes vs Bitdefender

Practical Applications of Malwarebytes

Personal Computer Protection

Malwarebytes is the ideal PC protection tool for home users:

• Run weekly scans to ensure your computer is malware-free
• Use Browser Guard to block ads and malicious websites
• Combine with Windows Defender for dual-layer protection

Mobile Device Protection

Malwarebytes for Android and iOS helps protect your phone:

• Scan apps for malicious software
• Block spam calls and phishing messages
• Check app permissions and detect security risks

Business Data and Website Protection

For businesses, Malwarebytes helps:

• Protect servers and workstations from ransomware attacks
• Centralized security management via Malwarebytes Nebula
• Real-time threat monitoring and response

Combine Malwarebytes with other security tools like KeePass (password manager) and 7-Zip (file encryption) for comprehensive data protection. See our complete website security guide for a robust cybersecurity strategy.

Handling Heavy Malware Infections

When your computer is heavily infected, Malwarebytes can help:

1. Boot into Safe Mode
2. Run Malwarebytes Full Scan
3. Quarantine all detected threats
4. Restart and run a second scan
5. Use Malwarebytes AdwCleaner to remove adware and PUPs

Cleaning Adware and PUPs

Malwarebytes includes AdwCleaner — a dedicated tool for removing:

• Unwanted browser toolbars
• Malicious pop-up ads
• Adware programs
• Hijackers that change default homepage and search engine

Common Errors and Troubleshooting

Malwarebytes Won't Install

• Make sure Windows Update is fully up to date
• Temporarily disable other antivirus software during installation
• Run the installer as Administrator
• Completely remove any previous Malwarebytes installation first

False Positive Detection

• Go to Detection History > Quarantine
• Select the falsely detected item
• Click Restore to recover the file
• Add the file to the Allow List to prevent future detection

Note: False positives are rare with Malwarebytes. If you encounter them frequently, report to the Malwarebytes team via their forum or support email.

Malwarebytes Cannot Scan Full Drive

• Ensure you have Administrator privileges
• Check that Malwarebytes has Full Disk Access (macOS)
• Temporarily disable other security software
• Run Malwarebytes as Administrator (Windows)

Premium Trial Expired

After the Premium trial expires, Malwarebytes automatically reverts to the Free version:

• The Free version can still scan and remove malware manually
• Real-time protection features are disabled
• Purchase Premium if you need comprehensive protection

Malwarebytes Slowing Down Your Computer

• Go to Settings > Performance
• Enable Use low priority for scans
• Limit Full Scans to non-work hours
• Add non-essential files to the Allow List

Frequently Asked Questions

Is Malwarebytes really free?

Yes. Malwarebytes Free is completely free for manual malware scanning and removal. The Free version lacks real-time protection but is still powerful enough to scan and remove malware on demand. Premium comes with a 14-day free trial.

Can Malwarebytes run alongside Windows Defender?

Yes. This is one of Malwarebytes' biggest advantages. It is designed to run alongside any other antivirus software (including Windows Defender, Kaspersky, Bitdefender) without conflicts, giving you dual-layer protection.

Can Malwarebytes replace my antivirus?

It depends on your needs. The Premium version can replace traditional antivirus with comprehensive real-time protection. The Free version should be used as a second layer alongside Windows Defender or another antivirus.

Does Malwarebytes protect against ransomware?

Yes. Malwarebytes Premium includes dedicated Ransomware Protection that monitors application behavior and prevents unauthorized encryption of personal files. This technology detects ransomware based on behavior, not signatures.

How do I cancel the Premium trial?

The Malwarebytes Premium trial automatically ends after 14 days without any charge. If you entered a credit card, go to Settings > Account and cancel before the trial period ends.

Is Malwarebytes Browser Guard free?

Yes. Malwarebytes Browser Guard is a completely free browser extension, independent of the main Malwarebytes application. You can install it on Chrome, Firefox, Edge, and Opera without installing Malwarebytes.

Should I buy the Premium version?

If you frequently download files from the Internet, visit unknown websites, or are concerned about ransomware, the Premium version is well worth the investment (~$40/year). If you only need periodic scans and already have Windows Defender, the Free version is sufficient.

Does Malwarebytes support Vietnamese?

Yes. Malwarebytes supports Vietnamese language. Select Vietnamese during installation or go to Settings > General > Language to change it.

Does Malwarebytes have a portable version?

Not officially. Malwarebytes does not offer an official portable version. However, you can use Malwarebytes AdwCleaner (a separate lightweight tool) in portable mode to clean adware and PUPs.

Can Malwarebytes scan USB drives?

Yes. In Custom Scan mode, you can select any drive or folder to scan, including USB drives, external hard drives, and SD cards. Malwarebytes Premium also automatically scans removable devices when connected.

Conclusion

Malwarebytes is the world's leading malware scanner and PC protection software, capable of detecting and removing virtually every type of malicious software — from viruses, trojans, and ransomware to adware and PUPs. With multi-layer detection technology combining AI and behavioral analysis, Malwarebytes is an essential tool for protecting your computer and personal data.

Whether you are a home user wanting to keep your PC safe from malware, an IT professional needing deep scanning tools, or a business requiring comprehensive endpoint security, Malwarebytes delivers exceptional results.

Download Malwarebytes free using the Download button at the top of this article and start protecting your computer today. Combine with other security measures like website security, password management with KeePass, and 7-Zip for a robust cybersecurity setup. Learn more about network security with Wireshark and other free security tools.