‘McAfee not working’ covers several different problems — the application won’t open, scans won’t run, real-time protection is off, or McAfee shows as inactive. Each has a specific fix. This guide covers all of them.
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Key Points
- McAfee won’t open: restart PC → right-click tray icon → Open McAfee → run as administrator
- Real-time scanning turned off: McAfee → PC Security → Real-Time Scanning → turn on
- McAfee shows as inactive in Windows Security: sign out of McAfee app and sign back in
- Subscription expired: mcafee.com → My Account → Subscriptions → Renew
- McAfee scans keep stopping: reduce scan priority or run in Safe Mode
- McAfee firewall inactive: McAfee → Firewall → turn on (should be on by default)
- Update error (‘cannot update’): check internet connection, flush DNS, restart McAfee
- If multiple components are broken: MCPR removal + fresh install from mcafee.com is the fastest fix
