You open your browser to check the weather, and suddenly tabs pop up showing ads for diet supplements you’ve never searched for. You try to close them, but more appear. Your homepage looks different. There’s a toolbar you don’t remember installing. You click on a news article, and you’re redirected to a sketchy shopping site instead.

It can feel annoying and intrusive, as if someone has hijacked your computer and you’re wondering if your personal information is at risk, or if this is just the beginning of something worse. If this sounds familiar, you’re probably dealing with adware.

Adware is fixable. With a few clear, guided steps, you can remove the unwanted software cluttering your screen and interrupting your day. Even better, we’ll show you how to keep it from sneaking back onto your device.

Key Takeaways

  • Adware is a type of malware that displays unwanted ads and can alter your browser settings without permission. It often sneaks in through bundled downloads, fake updates, or deceptive ads.
  • Common signs of adware presence include pop-ups, homepage changes, unfamiliar extensions, redirects, and slower device performance.
  • Removing adware requires a step-by-step approach: uninstall suspicious programs, clean up browser extensions and settings, run a full security scan, and check startup items if problems persist.
  • To prevent adware, download software only from trusted sources, read installation prompts carefully, keep your system updated, and use reputable security software with real-time protection.

What Is Adware?

Adware is a type of software that displays unwanted and disruptive advertisements on your device. It might show pop-ups constantly, change your browser settings without permission, redirect you to specific websites, or install toolbars and extensions you never asked for. The people behind adware make money every time you see or click on these ads, which is why the software tries so hard to get your attention.

Adware Transmission Methods Onto Your Computer

Vector Adware sneaks into your device through what looks like legitimate software downloads. You might download a free video converter, a PDF reader, or a game, and buried in the installation process, often in the fine print or those screens everyone clicks through quickly, is an agreement to install “partner software” or “recommended tools.” Before you know it, you’ve got unwanted programs running on your device.

Adware may also arrive through deceptive ads that mimic legitimate download buttons, fake software updates that claim you need to “update your video player” to watch content, and malicious browser extensions that promise useful features but deliver nothing but headaches. Sometimes it even comes bundled with other free software from less-than-reputable download sites.

From Nuisance to Security Threat

Not all adware is created equal. Some are mostly just annoying, showing ads that slow down your browsing, but don’t do much else. Others can be more invasive, tracking your browsing habits to target ads more aggressively, or even opening the door to more serious security threats. Regardless of where your situation falls on that spectrum, the presence of adware indicates that your device’s defenses need strengthening and your download habits could use a tune-up. With the right approach, it can be removed.

Signs of Adware on Your Device

Here’s a checklist of the most common symptoms of adware. If several of these describe what you’re experiencing, your device is likely affected.

  • New pop-up ads or tabs keep appearing: This happens even on websites you trust and have visited for years without issues. These pop-up ads might be completely unrelated to what you’re actually looking at, and often promote questionable products or services. You might see them appearing in corners of your screen, overlaying content, or opening in new browser windows without you clicking anything.
  • Your browser’s homepage or default search engine changed: When you open your browser, you’re greeted by an unfamiliar search engine or portal you’ve never seen before. When you try a query, you’re using a search service you didn’t choose and getting results mixed with sponsored links.
  • New toolbars, extensions, or add-ons appear: You definitely don’t remember installing these elements. These might have generic names such as “Web Assistant,” “Shopping Helper,” or “Search Manager,” taking up space in your browser and making it harder to navigate your normal bookmarks and tools.
  • You notice unfamiliar programs installed: In your applications folder, you spot software with names you don’t recognize or programs you’re certain you never intended to download.
  • Your browser has become noticeably slower: Pages take longer to load than they used to, and websites keep redirecting you to unexpected destinations. You try to visit a legitimate news site or online store, but end up on a completely different page full of ads or suspicious offers, or you keep being redirected.
  • Your device’s overall performance has declined: Your computer is using more resources than usual, fans are running more often, or programs take longer to open. This happens because adware often runs constantly in the background, consuming memory and processing power.

Safety and Preparation Before Removing

Before we roll up our sleeves and start the cleanup, take a few minutes to prepare to make the cleanup smoother and protect your important files along the way.

Back Up Your Important Files

This includes documents, photos, and other files you can’t afford to lose. You can copy files to an external hard drive, upload them to a cloud service, or use your computer’s built-in backup tool. This ensures that your valuable content is safe.

Save Your Current Work

If you have work open, save it first and close applications you’re not using. Some of the steps ahead might require restarting your computer or browser, and you don’t want to lose anything important.

Your Step-by-Step Guide to Removing Adware

Now, to the core of the matter. The steps listed below are straightforward and simple actions that ordinary computer users do safely every day. If you can install an app and use a web browser, you absolutely have the skills to handle this cleanup. Set aside about 30 to 45 minutes to focus on this with minimal interruptions.

Step 1: Uninstall Suspicious Programs

Adware often installs itself as a legitimate-looking program on your computer. You will need to find these unwanted programs and remove them. This is easier than it sounds, and you’ve probably uninstalled software before. It’s the same process, you’re just being more deliberate about what you’re looking for.

If You’re Using Windows

  1. From the Start menu, navigate to Settings > Apps. Here, you’ll see a list of all the software installed on your computer.
  2. Sort this list by “Date installed” or “Recently installed” to make it easier to spot programs that appeared around the same time your ad problems started.
  3. Look through this list carefully, and pay special attention to ones you don’t recognize, programs with generic or vague names, or anything you’re certain you didn’t intentionally download. Common culprits have names like “Web Companion,” “SearchProtect,” “PC Optimizer,” or unknown brands offering “helpful” tools.
  4. When you spot something suspicious, select it and click Uninstall. Windows will guide you through the removal process.

If You’re Using a Mac

The process is slightly different but just as straightforward.

  1. Open Utilities > Applications > Activity Monitor or simply search for it.
  2. Look at the list of running processes and check if anything is using an unusually high amount of CPU power or memory. If you see an unfamiliar app consuming a lot of resources, make a note of its name.
  3. Open the Applications folder and search for apps you don’t remember installing or that seem suspicious.
  4. When you find something you want to remove, drag it to the Trash. Right-click on the Trash icon and select “Empty Trash” to completely remove the application from your Mac. Some stubborn adware may try to reinstall itself if remnants remain elsewhere on the system.

As you review your installed programs, you might come across names you’re unsure of. Take a moment to search the program’s name online to know whether it’s legitimate software you installed for a purpose or widely recognized as adware or unwanted software. If you genuinely don’t remember installing it and can’t find a good reason to keep it, remove it.

Don’t worry about accidentally uninstalling something important. Essential system components typically can’t be uninstalled through normal means, and most legitimate programs can be reinstalled if you remove them by mistake.

Step 2: Clean Up Your Browsers

After dealing with installed programs, it’s time to restore your web browser, where adware often makes itself most visible and annoying. Adware loves to install unwanted extensions, hijack your homepage, and change your default search engine.

The exact steps vary slightly by browser, but the general process is similar across Chrome, Firefox, Edge, Safari, and others. We’re going to focus on the common actions that work in most browsers, and you can adapt them to your situation.

  1. Click the Menu button, usually three dots or lines in the upper corner, and find an option called Extensions, Add-ons, or something similar. These are adware’s usual hiding places.
  2. Remove anything you don’t recognize or didn’t intentionally install. Pay particular attention to extensions that claim to improve browsing, save money, or protect your privacy but come from unknown developers. Legitimate extensions usually come from well-known companies or have thousands of positive reviews. You can always reinstall them later if you discover that you actually needed them.
  3. Check your browser’s homepage and search engine settings by navigating to Settings and looking for options related to the startup, homepage, or search engine. Adware often changes these settings to direct you to specific websites or search engines that generate revenue for the adware developers. Make sure these are set to what you actually want, such as Google as your search engine.
  4. If your browser is heavily affected, most browsers offer a nuclear option: reset to default settings to remove all extensions, reset your homepage and search settings, and return the browser to its original condition. To find this option, look for “Reset settings,” “Restore settings to their original defaults,” or “Reset and clean up.” Your bookmarks and saved passwords typically remain intact, but you’ll need to reinstall any legitimate extensions afterward.
  5. Many modern browsers also include built-in tools to scan for unwanted software or harmful extensions. Chrome, for example, has a “Clean up computer” feature under its settings that can detect and remove harmful software. Edge offers similar protections. Meanwhile, the McAfee WebAdvisor browser extension provides real-time protection by alerting you to risky website links directly in your browser, email, or instant messages.
  6. After the cleanup, quit or close your browser and then reopen it to ensure all the changes take effect and lingering processes from removed extensions are truly stopped.

Step 3: Run a Scan With Dependable Security Software

Even after uninstalling suspicious programs and cleaning up your browser, there’s still a chance some adware remnants remain hidden in less obvious places on your computer. A thorough scan with a reliable and trusted antivirus or anti-malware tool can detect and remove adware components that aren’t visible in your regular program list.

  1. If you already have security software, make sure it’s up to date and run a full system scan. This might take 30 minutes to a couple of hours, depending on how much data you have. Once the scan is complete, review the threats it identifies and follow the software’s recommendations. This may entail quarantining or removing the detected threats.
  2. If you don’t have security software or your existing software isn’t catching everything, consider downloading McAfee Total Protection, which offers a reliable, complete defense against adware and malware with award-winning, AI-powered antivirus, as well as real-time threat protection, behavioral analysis to catch new and evolving threats, and scam detection features.
  3. Download security software only from the official website, not from an unvetted third-party site or a banner ad. For McAfee products, always download directly from its official website or authorized retailers such as Amazon, Best Buy, or your PC manufacturer’s website.
  4. Once you’ve removed the detected threats, restart your computer to apply the changes and fully terminate any malicious processes. Spend a few minutes testing whether the adware issues have improved: open your browser and visit your trusted websites. If the unexpected pop-ups have disappeared, the unwanted redirects have stopped, and the excessive advertising has decreased, then congratulations! You’re adware-free.

Step 4: Check Startup Items and Scheduled Tasks

In some cases, stubborn adware may add itself to programs that run automatically on startup or may schedule tasks that reinstall components you removed. If the problems keep coming back after the restarts, this section is for you.

On Windows

Check which programs run at startup in Task Manager > Startup. Look through this list for anything suspicious or unfamiliar. If you see startup items related to programs you removed earlier, or programs with vague names you don’t recognize, right-click on each entry and select “Disable.” This doesn’t uninstall the program, but stops it from starting automatically. You can always re-enable things later if you learn they are useful.

Next, on the Start menu, search for Task Scheduler, where adware sometimes creates scheduled tasks to periodically check for updates or reinstall components. Browse through the Task Scheduler Library and look for tasks associated with programs you don’t recognize.

On a Mac

Navigate to System Settings (or System Preferences on older versions) > Login Items > Users & Groups. Click on your username, and review a list of items that open when you log in. Look for anything suspicious and remove it by clicking the minus button.

Mac also schedules tasks to run at intervals. This functionality exists through LaunchAgents and LaunchDaemons, though checking these requires technical knowledge. This is here only as a backup strategy for persistent infections, but typically, the earlier steps we’ve covered will handle most situations.

Step 5: Persistent Adware Recurrence

After you’ve worked through all the steps and your system looks cleaner, but adware keeps reappearing, there are still steps you can take before taking more drastic measures.

  1. Scan with a different security tool: Sometimes, different security tools have different strengths, and a second opinion from another reputable scanner may catch things.
  2. Consider reinstalling your browser: Rather than merely adjusting settings as you did earlier, this time you could completely uninstall the browser, restart your computer, then download and install a fresh copy from the official website. This completely cleans the slate with no hidden remnants from previous infections.
  3. Seek help from the experts: If you’re still having problems after these additional steps, it might be time to seek help from people with specialized technical knowledge: the official support of your computer manufacturer, your local computer repair shop, or IT-savvy friends or family members. It’s better to get expert assistance than to continue struggling with an infected system.

Prevent Adware Infection

Persistent adware often indicates either a deeper system infection with more sophisticated malware, a personal habit, or a software source that’s continuously reintroducing the problem. If you keep downloading software from the same questionable sources or clicking the same types of deceptive ads, you’ll keep encountering the same problems. This is why prevention is so important. Avoiding adware in the future is largely about developing a few simple, smart habits.

Be Careful with Your Download Sources

Stick to official sources. If you need a program, download it directly from the developer’s official website or from trusted app stores like the Google Play Store, Microsoft Store, or Apple App Store, or from established platforms like Steam for games. Avoid third-party sites that aggregate software, because these are frequently where bundled adware hitches a ride, then inject unwanted extras into legitimate software installers.

Read The Fine Print

When you install new software, slow down and read what is happening during the installation process. It’s tempting to click “Next” repeatedly until the software is installed, but this is exactly what adware depends on. In the installation wizard, take the extra 10 seconds to look for language such as “Also install Web Helper for enhanced browsing” or “Set Search Bar as your new homepage for faster results,” and actively decline them. Choose custom or advanced installation options when available to have more control over what gets installed.

Keep Your Browser and Operating System Updated

Software updates add new features and security patches that could otherwise be exploited by malware and adware. By keeping your system current, you’re making it harder for malicious software to gain a foothold. Most modern operating systems and browsers can update automatically, so enable this feature if you haven’t already.

Use Reputable Security Software with Real-Time Protection

While these tools are great for cleaning up infections, they’re even more valuable for prevention. Good security software, such as McAfee Total Protection, continuously monitors your system, blocking dangerous websites and stopping harmful downloads. The Scam Detector identifies fraudulent text messages, emails, and even deepfake videos before you interact with them, while the two-way firewall monitors and stops traffic attempting to connect to suspicious servers and known botnets.

McAfee+ expands on Total Protection with identity and privacy protection features such as Personal Data Cleanup, which removes your information from data broker sites, and comprehensive identity monitoring with up to $4 million in identity theft coverage.

Develop a Healthy Skepticism Toward Offers That Sound Too Fantastic

Free streaming sites that offer the latest, fastest, and cheapest versions of anything are classic carriers of adware. Legitimate services cost money for a reason, and respectable software developers don’t need to trick you into installing their products. When something seems fishy, you’re being pressured to download something you didn’t seek out, or the claims sound exaggerated, trust that intuition and walk away.

Check Reviews, Downloads, and Permissions

Be particularly cautious with browser extensions and mobile apps. Before installing, check the reviews and look at the number of downloads. Legitimate, useful extensions typically have thousands or millions of users and predominantly positive reviews. Also, pay attention to the permissions an extension or app requests. If a simple note-taking app wants access to your camera and microphone, or if a weather extension wants to “read and change all your data on the websites you visit,” question whether those permissions make sense.

Regularly Back Up Your Files

Finally, maintain regular backups of your important files. While this can’t prevent adware infections, in the worst-case scenario where you need to completely wipe and reinstall your operating system, it will give you confidence to take decisive action when needed.

Final Thoughts

Seeing your computer overtaken by intrusive ads and unwanted software is genuinely frustrating, and you might feel at fault. But adware is designed to be deceptive, tricking you into installing it and actively hiding its activities. Getting infected with adware reflects more on the predatory nature of the cyber attackers who create this software.

With the structured approach that we discussed, such as removing suspicious programs, cleaning up browsers, scanning with security software, and developing smarter habits, you can reclaim control of your device.

You don’t have to do everything in one sitting. Just choose one small action right now. Uninstall one suspicious program. Remove one questionable browser extension. Run one security scan. Each step forward makes a visible difference, regardless of your pace.