Antivirus Errors Windows
All guides on this topic, sourced from official documentation.
7 guides published
Malwarebytes Not Opening on Windows 11 — Fix
Malwarebytes won't open, crashes on launch, or disappeared from your system on Windows 11? This guide covers restarting the Malwarebytes service, using the official Malwarebytes Support Tool for clean reinstall, and resolving conflicts with Windows security components.
SoftwareMcAfee Not Opening on Windows 11 — Fix
McAfee Total Protection won't open or crashes on Windows 11? This guide covers repairing McAfee services, using the official MCPR removal tool, and fixing McAfee after a Windows update breaks the installation.
SoftwareDoes McAfee Slow Down Your Computer — Fix
McAfee Total Protection causing high CPU, slow startup or sluggish performance on Windows 11? This guide covers identifying which McAfee process is responsible, optimising real-time scanning exclusions, and disabling features that consume resources without improving protection.
SoftwareMcAfee Won't Uninstall on Windows 11 — Fix
McAfee Total Protection won't uninstall, the uninstaller freezes, or McAfee keeps coming back after removal on Windows 11? This guide covers using the official MCPR tool to remove every McAfee component including kernel-level drivers the standard uninstaller leaves behind.
SoftwareNorton 360 Not Opening on Windows 11 — Fix
Norton 360 won't open or crashes on launch on Windows 11? This guide covers repairing Norton services, using the Norton Remove and Reinstall tool, and fixing conflicts with Windows security components.
SoftwareDoes Norton Slow Down Your Computer — Fix
Norton antivirus causing high CPU, slow startup or sluggish performance on Windows 11? This guide covers optimising Norton's scan schedule, configuring exclusions, enabling Silent Mode, and right-sizing Norton for your hardware.
SoftwareWindows Security Not Opening on Windows 11 — Fix
Windows Security won't open or shows a blank screen on Windows 11? This guide covers re-registering the app, running System File Checker, and fixing service conflicts that prevent Windows Defender from loading.