PC gamers experienced false alarms from Windows Defender regarding the kernel-level driver WinRing0, which is essential for hardware monitoring applications. This misidentification caused issues such as fan control applications malfunctioning after being quarantined. WinRing0 allows applications to interact with hardware components, and its use is widespread among developers. Microsoft flagged WinRing0, complicating matters for developers due to the requirement for digital signatures on drivers, which can be costly for open-source projects. Some developers, like SignalRGB, are creating proprietary drivers as alternatives, though this requires significant resources. Microsoft is reviewing its detection logic to reduce false positives, while iBuyPower plans to provide a signed version of WinRing0 to aid developers. Users may need to update applications or adjust Windows Defender settings to maintain functionality, as Razer and SteelSeries have moved away from using WinRing0 in their software.