If Chrome is suddenly opening strange tabs, showing extra ads, or changing your homepage, adware may be the cause.
This guide explains how to remove adware from Chrome, identify common infection patterns, and lock down settings so the problem does not return.
Chrome itself is rarely the root problem; unwanted browser extensions, modified site permissions, and bundled software are usually responsible.
The key is to clean Chrome methodically, then check the system sources that enabled the adware in the first place.
What adware looks like in Chrome
Adware is software that injects advertising into your browsing experience, often by changing browser settings, installing extensions, or redirecting searches.
In Chrome, the symptoms can look like legitimate behavior at first, which is why many users miss the source.
- Pop-ups and banners on sites that normally do not show them
- New tabs opening without your action
- Searches rerouted through unfamiliar engines
- Homepage, startup pages, or new tab page changed unexpectedly
- Unknown Chrome extensions appearing in the toolbar
- Persistent notifications from suspicious websites
Because adware often uses browser permissions and extension APIs, it can persist even after you close Chrome.
That is why removal usually requires more than deleting one suspicious add-on.
How to remove adware from Chrome step by step
1. Remove suspicious extensions
Start by checking Chrome extensions, since they are the most common place adware hides.
Open Chrome, select the three-dot menu, then go to Extensions and review everything installed.
- Remove anything you do not recognize
- Delete extensions that were installed around the time the ads started
- Be cautious with coupon tools, video downloaders, search helpers, and “shopping assistant” add-ons
If an extension looks legitimate but behaves strangely, remove it anyway.
Many adware campaigns use extensions with vague names or copycat branding to avoid suspicion.
2. Reset Chrome settings
Adware often changes Chrome preferences such as the search engine, startup page, and new tab behavior.
Resetting Chrome returns many of these settings to default without deleting bookmarks or saved passwords.
Go to Settings > Reset settings > Restore settings to their original defaults.
Confirm the reset, then relaunch Chrome.
This step can remove unwanted startup pages, disable problematic extensions, and restore search behavior.
It is especially useful when Chrome keeps redirecting you even after an extension has been deleted.
3. Check search engine and homepage settings
After resetting, verify that the correct search engine is selected.
In Settings > Search engine, choose a trusted provider such as Google, then inspect the managed search engines list for anything unfamiliar.
Also review startup pages in Settings > On startup.
Remove any site you did not intentionally add, especially if it is a redirect page, ad network, or unfamiliar domain.
4. Remove unwanted site permissions
Some adware uses Chrome site permissions to push notifications or force redirects.
Open Settings > Privacy and security > Site settings and check the following:
- Notifications: remove suspicious websites from the allowed list
- Pop-ups and redirects: block questionable sites
- Ads: review whether any site permissions look abnormal
- Automatic downloads: block sites that seem untrustworthy
Notification spam is one of the most common adware tactics.
If a site has permission to send alerts, it can keep bothering you even when Chrome is closed.
5. Clear browsing data
Cached scripts, cookies, and stored site data can help a malicious redirect keep reappearing.
Clearing browsing data helps remove leftovers that may trigger the same behavior after cleanup.
Go to Settings > Privacy and security > Delete browsing data.
At minimum, clear:
- Cookies and other site data
- Cached images and files
- Hosted app data if available
If you are signed into important services, you may need to log in again afterward.
That tradeoff is usually worth it if adware has altered browser behavior.
Check your computer for the source of the adware
Removing adware from Chrome alone may not be enough if the unwanted software is installed on Windows, macOS, or another browser profile.
Many adware infections arrive bundled with free software, browser toolbars, or fake update prompts.
Review installed programs
On Windows, open Apps > Installed apps or Control Panel > Programs and Features.
On macOS, check Applications and remove anything suspicious.
Look for recently installed items, vague publisher names, or apps you did not knowingly install.
Pay special attention to:
- Download managers
- Browser toolbars
- PDF tools from unknown publishers
- Video converters and codec packs
- Free utilities that promise “system optimization”
Scan with security software
Run a full scan using trusted security software.
Microsoft Defender, Malwarebytes, or another reputable anti-malware tool can detect browser hijackers, adware bundles, and potentially unwanted programs.
If one scan finds threats, follow up with a second opinion scan.
Adware often arrives with multiple components, and a deeper scan can catch leftovers that the first pass misses.
How to tell whether Chrome is still compromised
After cleanup, test Chrome carefully.
Open a few trusted websites and watch for unexpected redirects, new tabs, or notification prompts.
Search for a common term and verify that the result path and search engine are correct.
If the issue returns immediately, one of these causes is likely still active:
- A malicious extension was not fully removed
- A desktop application is reinstalling browser changes
- Chrome profile data is corrupted or synchronized from another device
- Browser notifications were left enabled for a shady site
In stubborn cases, create a new Chrome profile and test there.
A fresh profile helps determine whether the issue is tied to local browser data or a wider system-level problem.
Prevent adware from coming back
The best defense against adware is reducing the chance of installation in the first place.
Most infections begin with bundled installers, misleading download buttons, or excessive extension permissions.
- Install software only from trusted publishers and official websites
- Choose Custom or Advanced installation when available
- Decline optional offers, toolbars, and browser changes
- Keep Chrome and your operating system updated
- Install extensions only from reputable developers
- Review extension permissions before adding anything new
It also helps to audit browser permissions monthly.
A quick check of notifications, startup pages, and extensions can catch problems before they become persistent.
When to use Chrome’s profile or browser reinstall options
If you have removed extensions, reset Chrome, cleared data, and scanned your computer but the issue continues, the browser profile may be damaged.
In that case, create a new Chrome profile or reinstall Chrome after backing up bookmarks and passwords.
A reinstall is not the first step, but it can help when profile-specific files keep restoring unwanted behavior.
If you sync Chrome across devices, make sure the same adware is not being reintroduced from another signed-in device.
What to do if adware affects other browsers too
Adware that appears in Chrome may also affect Microsoft Edge, Firefox, or Opera if the underlying installer modified the system.
Check every browser on the device, remove suspicious extensions, and review notification permissions in each one.
When multiple browsers are affected, a system-wide cleanup is usually necessary.
That makes it important to remove bundled apps and run a full malware scan rather than focusing on Chrome alone.