How do I clear a McAfee Hack on my computer?

What is often called a “McAfee hack” is usually one of these:

1. Fake browser notifications or pop-ups pretending to be McAfee.
2. Adware or a suspicious app/extension on the PC.
3. Actual malware damage, which may require a reset if files or settings were changed.

Try these steps in order:

1. Check whether McAfee is really installed
   • Open Start and search for McAfee.
   • If it is installed, open the real app and run a scan from the app itself, not from the pop-up.
   • If it is not installed, the alerts are likely fake browser notifications or adware.
2. Remove fake browser notifications in Microsoft Edge
   • Open Edge.
   • Go to notification settings and remove or block any site in the Allow list that is unfamiliar.
   • Also make sure pop-ups are blocked and clear any allowed sites there.
   • If the alerts only appear while browsing, this is the most likely cause.
3. Check for suspicious browser extensions
   • In Edge or Chrome, open the extensions page.
   • Remove anything not recognized, especially items such as ad blockers, PDF converters, or search assistants that were not intentionally installed.
4. Uninstall suspicious apps
   • Go to installed apps and remove software that was not intentionally installed.
   • If a suspicious program is not listed in Programs and Features, check:
     • C:\Program Files
     • C:\Program Files (x86)
   • If the program’s folder contains an uninstall file such as Uninst.exe or Uninstall, run that instead of deleting the folder.
   • Do not delete the folder manually if there is no uninstall file, because that can affect Windows or other programs.
5. Run Microsoft malware removal tools
   • Run the Malicious Software Removal Tool:
     • Press Windows key + R
     • Type %windir%\system32\mrt.exe
     • Select OK and follow the prompts to scan and clean the PC.
   • Microsoft also provides Microsoft Safety Scanner as a malware removal tool.
6. Restart and update Windows
   • After scanning, restart the PC.
   • Install the latest Windows updates.
7. If malware changed the PC and problems continue
   • Back up important files.
   • If the infection caused irreversible changes, use Windows recovery options to reset, restore, or reinstall the PC.
   • Restore files from backups created before the infection if possible. Backups stored on the PC during the infection may also have been modified.

A useful clue:

• Pop-ups only while browsing usually means fake site notifications.
• Pop-ups even when the browser is closed can indicate adware, a bad extension, or malware that needs scanning and removal.

References:

• Virus Protection - Microsoft Q&A How do I know if my computer has a virus or if I need to add extra protection?
• Pop up is showing up that my computer is infected with a virus - Microsoft Q&A
• How can I remove McAfee Norton Pop Ups on Windows 11? It is not showing up on Apps or Task Manager. - Microsoft Q&A
• Unexplained Windows or software behavior may be caused by deceptive software
• Antivirus and antimalware software: FAQ
• Troubleshoot problems with detecting and removing malware