A notification that names a virus, gives a countdown or tells you to call support may come from a website you once allowed to send alerts. It is not automatically a detection by your antivirus. Do not click the alert to investigate it.
Find the sender
- Note the website name in the notification. In Chrome, open Settings → Privacy and security → Site settings → Notifications. Find that site under sites allowed to send notifications and block or remove its permission.
- In Edge, open Settings → Cookies and site permissions → Notifications and remove or block the suspicious site. Menu names can vary with browser versions.
- Close the notification. If you downloaded or ran a file from it, check the file and run a security scan; revoking a notification permission does not undo a download.