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If an ad blocker is not working in Chrome, first identify what you are seeing: ordinary page ads, pop-ups, notification alerts, redirects, or a Chrome message about intrusive ads. Chrome’s built-in intrusive-ad control is not a general-purpose ad blocker, and an extension has separate status and site-access settings. Check the setting that matches the symptom before reinstalling anything.
First, identify which kind of ad or alert is appearing
Chrome’s built-in control targets intrusive ads on sites with poor ad experiences, such as pages with too many ads, flashing ads, autoplaying audio, or ad walls. It does not promise to remove every ad. Google describes the feature as removing ads from sites that violate the Better Ads Standards: Visit a site by turning off Chrome’s ad blocker.
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- Ads inside a webpage: Check whether you mean Chrome’s built-in intrusive-ad setting or a separate ad-blocking extension.
- A Chrome message saying “Intrusive ads blocked”: Check the built-in setting for that site.
- Pop-up windows or redirects: Check Chrome’s pop-up and redirect permission; these controls are separate from an ad-blocking extension.
- Notification cards: Review the site’s notification permission.
- Ads, redirects, or changed browser settings across many sites: Check extensions and management restrictions; persistent or unexpected behavior may warrant an unwanted-software check.
Check Chrome’s built-in intrusive-ad setting
On desktop Chrome, open Settings → Privacy and security → Site settings → Additional content settings → Intrusive ads. The labels or path may vary between Chrome versions, so search Settings for “Intrusive ads” if you do not see the same sequence.
To change the setting for one trusted site, open that site, select the site information icon beside the address, find its Intrusive ads permission, set it to Allow, and reload the page. This permits ads from that site; it does not repair or change a separately installed extension.
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Check whether the extension is enabled and allowed on the site
- In Chrome, open Extensions → Manage extensions. You can also enter
chrome://extensionsin the address bar. - Find the ad-blocking extension you intended to use and confirm it is enabled.
- Open Details and inspect its site access. If it needs to filter the affected page, allow access to that site. Choose access to all sites only if that is what you intend.
- If Chrome says the extension is corrupted, use its Repair control when available.
Granting access to more sites gives the extension broader access to your browsing activity on those sites. Only grant permissions to an extension you trust.
If Chrome says the extension is disabled
Chrome may disable an extension if it is unpublished from the Chrome Web Store or considered unsafe. An unpublished extension can appear grayed out and may not be re-enabled from the usual extensions list. Check with the extension’s developer for an available Chrome Web Store version; do not bypass Chrome’s restriction.
Handle pop-ups and notification alerts separately
Google says Chrome blocks pop-ups by default. If the problem is a window opening over a page, go to Settings → Privacy and security → Site settings → Pop-ups and redirects and check the site-specific allow or block list. See Google’s instructions for blocking or allowing pop-ups in Chrome.
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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →If alerts keep appearing after pop-ups are blocked, review the site’s notification permission under its site settings. A site you previously allowed to send notifications can still display alerts; changing an ad-blocking extension’s settings will not necessarily stop them.
Check whether work or school management limits extensions
An organization can manage Chrome settings or restrict extension installation on a work or school device. Look for Managed by your organization in Chrome, then inspect chrome://management and chrome://policy to see whether the browser is managed and which policies apply. If a policy blocks the extension or controls the relevant setting, ask your administrator about it rather than trying to remove legitimate organization controls. Google explains how to tell if Chrome is managed and provides information on Chrome policies.
Look for unwanted software only when the symptoms point to it
Ordinary ads on a webpage alone do not establish that a device has malware. A check for unwanted software is more relevant if pop-up tabs keep opening, the homepage or search engine changed unexpectedly, unfamiliar redirects appear, or extensions return after removal.
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Review recently installed programs and unfamiliar extensions. Google recommends checking for unwanted programs before resetting Chrome settings. If you do reset settings, some extensions may need to be turned on again. Follow Google’s steps for removing unwanted ads, pop-ups, and malware; treat a reset as a later step, not the first fix.
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