Windows Defender Now Flags WinRing0 Driver as Security Threat, Breaking Multiple PC Monitoring Tools

Windows Defender has begun identifying WinRing0 -- a kernel-level driver used by numerous hardware monitoring applications -- as malicious software, causing widespread functionality issues for affected tools. The driver, which provides low-level hardware access necessary for reading fan speeds, controlling RGB lighting, and monitoring system components, is being quarantined due to potential security vulnerabilities that could be exploited by malware.

WinRing0 gained popularity among developers because it's one of only two freely available Windows drivers capable of accessing the SMBus registers needed for hardware monitoring functions. The affected applications include Fan Control, OpenRGB, MSI Afterburner, LibreHardwareMonitor, and multiple others that rely on this driver to communicate with system hardware.

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