These are commonly browser notification scams, not real Windows virus alerts. They often appear after a site was allowed to send notifications.
- In Microsoft Edge, open the notification permissions page:
edge://settings/content/notifications - In the Allow section, remove or block any site that is unfamiliar or suspicious.
- If preferred, turn off Ask before sending to stop all sites from requesting notification permission.
- Also check Edge pop-up permissions and clear any allowed sites:
edge://settings/privacy/sitePermissions/allPermissions/popups - Clear allowed notification sites here as well:
edge://settings/privacy/sitePermissions/allPermissions/notifications
If the alerts are full-screen or include loud audio, Microsoft Edge scareware blocker can help. When it detects a scam, Edge exits full-screen mode, stops aggressive audio playback, and shows a warning so the page can be closed.
Important signs that confirm it is a scam:
- Microsoft error and warning messages never include a phone number.
- Microsoft does not make unsolicited support calls or send unsolicited messages to fix a computer.
- Fake alerts often try to pressure users into calling a number, paying, or giving remote access.
If any information was already given to the scammer or remote access was allowed:
- Uninstall any app the scammer asked to install.
- Run a full scan with Microsoft Defender Antivirus and apply security updates.
- Change passwords.
- Contact the bank or card provider if payment information was shared.
If Windows Defender shows a real detection, use Show details to review it, then choose Remove or Quarantine unless the software is fully trusted. Allow should be used only for software that is trusted.
- How do I remove a persistent fake-virus alert popup? - Microsoft Q&A
- Pop up is showing up that my computer is infected with a virus - Microsoft Q&A
- Prevent online scams with the scareware blocker in Microsoft Edge
- Protect yourself from tech support scams
- Tech support scams
- Endpoint Protection client frequently asked questions