Pop-up windows, ads in the corner of your screen, or alerts saying "Your PC is infected" - even when Chrome is closed. These almost always come from a website you once allowed to send notifications, from a site in your pop-up allow list, or from an extension. None of it is Chrome or Windows warning you.
This guide covers Chrome on Windows and Mac first, then Android and iPhone.
Web notifications look like system alerts, but they carry the site's name (for example "site-name.xyz" under the message). If you see a scary virus warning with a website name in it, it's an advert, not a real alert. Don't click it. Our guide to the fake virus warning pop-up explains the scam behind them.
Quicker route: click a notification's settings (gear) icon or right-click it - it often opens the site's notification setting directly.
Chrome blocks pop-ups by default, but sites can be added to an allow list.
If a site you need (a bank or a booking site) must open a pop-up, allow only that one site.
An extension can inject ads and pop-ups into every page.
chrome://extensions in the address bar and press Enter.Chrome's Safety Check (Settings > Privacy and security > Safety Check, or in some versions Settings > Safety Check) also flags harmful extensions and sites with notification permissions you rarely visit.
Adware often changes these too.
Settings > Reset settings > Restore settings to their original defaults > Reset settings. This resets your start page, search engine, pinned tabs and site permissions, and turns off extensions. Your bookmarks, history and saved passwords stay.
If pop-ups appear even when Chrome is closed and no site has notification permission, a program on the PC may be showing them.
Our guide on how to remove viruses and malware from your PC has the full steps.
You can also long-press a notification in the notification shade and turn off notifications for that site. If ads appear outside Chrome - on the home screen or over other apps - the cause is usually an app, not Chrome. Check recently installed apps in Settings > Apps.
iPhone doesn't let websites in Chrome send push notifications the way desktop and Android do, so problems are usually pop-ups:
A "calendar virus" (spam events on your calendar) comes from a subscribed calendar, not Chrome - delete the calendar subscription in Settings > Apps > Calendar > Calendar Accounts.
If pop-ups continue after all these steps, back up your files and check with a second opinion scanner, or ask the GetQuickTechSupport team to look at it with you. And if you clicked a pop-up and entered a password, change that password now.
At some point a site asked to show notifications and Allow was clicked, often on a fake 'click Allow to continue' page. Remove the site under Settings > Privacy and security > Site settings > Notifications.
Yes. Chrome blocks pop-ups by default. If you still see them, a site may be allowed in your pop-up settings, the ads may be part of the page itself, or an extension or unwanted program may be showing them.
No. Chrome notifications come from websites, not from Chrome or Windows security. A notification saying your device is infected is a scam - don't click it, just remove the site's permission.
In Chrome settings, open Privacy and security > Site settings > Notifications and choose Don't allow sites to send notifications.
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