Fixing Windows 10 100% disk by stopping SysMain

21 Jan 2020opinionwin10

I just spent hours trying to figure out and fix a Windows 10 machine that was taking 100% disk, 100% RAM and about 50% CPU with abolutely nothing running. Of course, I initially blamed the user... then, a misbihaving (hidden, background) app... then, malware / virus... the, a runaway Windows Defender... then, a hard disk / hardware failure... but ultimately discovering the culprit is - drum roll - Microsoft Windows itself! As usual!

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