Check Edge scareware blocker before the next fake support page

A full-screen webpage that blares an alarm and claims your files are infected is designed to get you to call fake support or allow remote control. Microsoft Edge includes a scareware blocker that looks for deceptive full-screen behavior on the device and may exit full screen, stop audio and offer to close the page. Microsoft says availability and default enablement depend on device specifications. It is a useful layer alongside SmartScreen, not a reason to trust every page it does not flag.

Before you start​

Update Edge first. Do not seek out a real scareware page to test the blocker. If a page currently demands a phone call, ignore its number, exit full screen and close the tab. Use another trusted device to handle account or payment recovery if you already followed the page's instructions.

Do it step by step​

1. In Edge, open Settings and more, Settings, Privacy, search, and services, then Security. Look for Scareware blocker and note whether the toggle is available and on. Microsoft documents that some low-spec devices may not offer it.
2. Review SmartScreen in the same security area. SmartScreen's reputation checks and scareware blocker's behavior detection cover different signals; leave both available rather than trading one for the other.
3. If the toggle is present but off, turn it on unless your organization manages the setting. Record the current Edge version and whether a work policy prevents changes, so troubleshooting starts with facts instead of a guess.
4. Learn the warning flow: when Edge flags a page, inspect the thumbnail and choose Close page if it is not a site you intentionally opened. A Continue option can exist for false positives; do not choose it just because a page claims the warning is mistaken.
5. If you accidentally visited scareware and gave remote access, disconnect the session, remove the remote-access tool, run an updated security scan, review account sign-ins and contact payment providers as needed. The blocker cannot undo actions already taken.
6. Review the setting after major Edge updates and keep Windows updated. If the control is missing, use Microsoft's current device-requirement guidance; do not download a separate 'scareware blocker installer' from search ads.

Check the result​

The built-in control is on where supported, SmartScreen remains enabled, and you know how to close a flagged page without calling its number. A missing control has an explained device or policy reason.

If something goes wrong​

If a legitimate full-screen site is blocked, leave it closed while checking the exact address and purpose. Report a false positive through Edge's feedback route if appropriate. If the page was not blocked, that does not establish it is safe; close suspicious pages manually.

Know the limit​

Microsoft says the analysis runs locally on the device, but detection is not perfect and availability varies. Scareware blocker does not scan the whole PC for malware and does not replace account recovery, payment dispute or professional incident help after a scam. Microsoft's scareware blocker guide Edge security overview