AdwCleaner for Windows

AdwCleaner for Windows is a free malware removal utility designed to find and clean adware, browser hijackers, potentially unwanted programs, and unwanted software that may arrive bundled with other downloads. Developed by Malwarebytes, it focuses on the irritating software that can change browser settings, display excessive advertising, install toolbars, or leave a PC feeling cluttered and difficult to control.

Unlike a conventional antivirus, AdwCleaner does not run continuously in the background or attempt to prevent every type of cyberattack. It is an on-demand cleanup tool: you open it when a Windows computer shows suspicious browser behaviour, unexpected applications, intrusive pop-ups, or other signs of unwanted software. Its narrow focus, simple interface, and portable executable make it particularly useful for home users, support technicians, and anyone seeking a second-opinion scanner alongside their existing security software.

AdwCleaner Review

AdwCleaner remains relevant because potentially unwanted programs occupy an awkward space between clearly malicious software and applications that users knowingly choose to install. A bundled utility may not behave like a destructive virus, yet it can still change a browser’s search provider, add unwanted extensions, display advertising, interfere with network settings, or create persistent startup entries. General antivirus products may identify some of these items, but their handling of lower-risk software varies. AdwCleaner gives users a dedicated way to investigate and remove this type of clutter.

The program follows a straightforward scan-and-clean workflow. After opening the executable and accepting the licence agreement, users can start a scan from the uncluttered dashboard. Results are presented for review rather than removed without explanation. Detected adware, potentially unwanted programs, and eligible preinstalled applications can be selected before they are moved into quarantine. Some cleaning operations require Windows to restart so that locked files or active processes can be handled properly.

This approach makes AdwCleaner accessible to less technical users, but it still requires judgment. Potentially unwanted software is not always objectively harmful. A browser extension, manufacturer utility, or bundled program may be unwanted by one person and useful to another. Reviewing the detection list before cleaning is therefore important, especially when the scan includes software that came preinstalled with a computer. The program’s quarantine system reduces the risk of an irreversible mistake because detected items can be restored unless they have been permanently deleted.

Another advantage is that AdwCleaner does not need to become a permanent part of the system. It runs from a downloaded executable and creates working folders for settings, logs, and quarantined files. This makes it practical for occasional troubleshooting and for technicians who need a focused cleanup utility without deploying another full security suite. A built-in removal option can later delete the application files and quarantine data from the PC.

Performance demands are modest, and the tool is intended to complete targeted scans rather than consume resources continuously. Its current documentation lists support for modern Windows systems, although Malwarebytes’ published support pages contain some inconsistencies around Windows 8.1. The company separately states that AdwCleaner 8.5 and later work only on Windows 10 and Windows 11, so users of older releases of Windows should not assume that the latest build is supported.

The product is still actively maintained. Malwarebytes lists AdwCleaner 8.8.1, released on May 13, 2026, as the active version at the time of writing. That release addressed a DLL sideloading security issue and improved compatibility with SetMe remote-control processes. Recent updates have also refreshed detection definitions and corrected scanning, quarantine, parsing, and process-handling problems. Continued maintenance matters for a remediation tool because both Windows behaviour and unwanted-software techniques change over time.

AdwCleaner’s main limitation is also central to understanding its purpose: it is not a replacement for real-time antivirus protection. It does not continuously monitor downloads, block phishing pages, provide ransomware defence, or stop malicious processes as they appear. It is most useful after a problem is suspected or as a periodic second-opinion scan. Windows users still need an actively maintained security product, current operating-system updates, and sensible browsing habits for broader protection.

Some of its advanced repair controls also deserve caution. AdwCleaner can reset firewall rules, proxy settings, Winsock, TCP/IP configuration, browser policies, the Hosts file, and other parts of Windows. These functions may help repair changes left behind by unwanted software, but they can also remove legitimate custom settings. Malwarebytes explicitly advises users not to run the Basic Repair process unless directed by a support agent.

Privacy-conscious users should also review the application settings. AdwCleaner can connect to Malwarebytes services to retrieve database updates, and an optional usage-and-threat-statistics setting can send information such as detected items, usage frequency, and country-level data. The statistics option can be disabled, while online database checks are enabled by default to keep detections current.

Overall, AdwCleaner succeeds by remaining specialised. It is easy to launch, easy to understand, and focused on a category of software that can be annoying without always looking like a traditional malware infection. Users seeking automatic, always-on protection will need a different product. For cleaning browser hijackers, bundled applications, adware, and other potentially unwanted programs, however, it remains a practical addition to a Windows troubleshooting toolkit.

Key Features of AdwCleaner

Adware and PUP Scanning

AdwCleaner scans Windows for adware and potentially unwanted programs, commonly shortened to PUPs. These may include bundled utilities, advertising components, intrusive software, or applications installed through unclear download offers.

The focused detection model is useful when a PC has unexplained pop-ups, unfamiliar programs, redirected searches, or browser settings that keep changing. Rather than positioning itself as a full antivirus scan, AdwCleaner concentrates on software and configuration changes associated with unwanted installations.

Browser Hijacker and Toolbar Cleanup

Unwanted browser extensions, toolbars, altered home pages, and modified search settings can make a browser difficult to use. AdwCleaner includes remediation technology for browser-related components and has historically updated its modules to support changes in browsers such as Chrome and Firefox.

This capability is especially valuable when removing an application through Windows does not restore the browser to its previous state. Users should still inspect results carefully, since legitimate extensions and organisation-managed browser policies may resemble unwanted modifications.

Preinstalled Software Detection

AdwCleaner can identify certain applications that were installed by a PC manufacturer or included with the original system image. These programs are shown separately from conventional adware and PUP detections, helping users distinguish factory-installed software from items acquired later.

Removal is optional. Some preinstalled tools provide hardware controls, update functions, recovery services, or device-specific features, so they should not be deleted merely because the scanner lists them. The feature is most useful for identifying unnecessary trialware or promotional applications on a new or heavily customised Windows PC.

Reviewable Scan Results

The program displays detected items before cleaning, allowing users to choose what should be quarantined. This review stage is important because PUP classifications can involve context and personal preference rather than a simple safe-or-malicious decision.

AdwCleaner also supports reporting suspected false positives from the results screen. That gives users a way to flag a legitimate file or application that may have been classified incorrectly, while allowing Malwarebytes’ researchers to examine the detection.

Quarantine and Restoration

When selected items are cleaned, they are placed into quarantine and modified so they cannot remain active in their original locations. The quarantine interface separates ordinary detections from preinstalled software and allows individual items to be restored or permanently deleted.

This safety net is one of AdwCleaner’s most important practical features. Restoring an item can help when cleaning removes a required component or affects a legitimate application. Permanent deletion should generally wait until the computer has been used long enough to confirm that everything still works as expected.

Logs and Scan History

AdwCleaner creates text-based logs containing scan and cleanup details. These records can help experienced users and support technicians see what was detected, which actions were taken, and whether a restart or further investigation is necessary.

The interface also shows basic scan history and detection totals. Although these records do not replace a full security investigation, they are useful when troubleshooting a recurring browser problem or sharing information with a technical support professional.

Configurable Exclusions

Users can exclude selected items from future scans when they are confident that a detection is legitimate or intentionally installed. Exclusions help prevent repeated alerts for software that the user has reviewed and chosen to keep.

They should be used selectively. Excluding an item without understanding it can allow genuinely unwanted software to remain undetected during later scans. For uncertain results, quarantine and further investigation are safer than immediately creating a permanent exception.

Command-Line Controls

AdwCleaner provides command-line options for scanning, cleaning, including preinstalled applications, changing the working directory, avoiding an automatic reboot, and removing the program’s files. This gives technicians and advanced users more flexibility than the graphical interface alone.

The command-line mode can support repeatable troubleshooting workflows, but it does not turn AdwCleaner into a fully managed endpoint-security platform. It is still a specialised remediation utility, and automated cleaning should be used carefully because the user may not have an opportunity to review every detection first.

AdwCleaner is best suited to Windows users who need a quick, focused way to investigate adware, unwanted browser changes, bundled programs, or unnecessary preinstalled software. Its free availability, reviewable results, quarantine controls, and continued development make it a useful second-opinion cleaner. Its lack of real-time protection is an important boundary, but within that boundary, AdwCleaner remains a sensible tool to keep available for occasional PC cleanup and troubleshooting.

How to Download and Install AdwCleaner on Windows

AdwCleaner is distributed as a portable Windows executable rather than a conventional installed application. Download it through the verified button on this page or Malwarebytes’ official distribution channel. A subscription and traditional setup wizard are not required, but Windows administrator approval may be requested when the program opens.

How to Download and Run AdwCleaner

1. Select the Download Free Version button on this page.

2. Continue to the verified AdwCleaner download source.

3. Save the executable in an accessible location, such as the Downloads folder.

4. Wait until the download is complete before opening the file.

5. Double-click the downloaded AdwCleaner executable.

6. Approve the Windows User Account Control request if it appears.

7. Read the End User Licence Agreement and select I AGREE to open the application.

Because AdwCleaner is portable, there is no separate installation wizard, component selection screen, or activation process. Keep the executable in a known folder if you plan to use it again, or remove it through AdwCleaner’s own removal controls when it is no longer needed.

Getting Started with AdwCleaner

1. Close unnecessary applications. Save open documents before scanning because the cleaning process may close running programs or require Windows to restart.

2. Check for definition updates. Allow AdwCleaner to retrieve current detection information when an internet connection is available.

3. Start a scan. Open the dashboard and begin an on-demand scan of the Windows device.

4. Review every detection. Check the listed adware, potentially unwanted programs, and preinstalled applications before selecting items for removal.

5. Clean selected items. Allow AdwCleaner to quarantine the chosen detections, then approve a restart if one is required to complete the process.