Although now that I look at what I just typed, saying that my home PC "is too old" already factors in the potentially-incorrect assumption that a CPU earlier than a 7th Generation Intel Core won't efficiently use HVCI. It's perhaps an excellent test case for testing the impact.
I suppose the relevant info here is that any incompatible drivers listed in yellow would prevent enabling HVCI? Is that true? What about the other yellow items below? E.g. the lack of: HSTI TPM Secure MOR NX Protector SMM Mitigation
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None of those technically prevent enabling HVCI... It is capable on any device that supports hardware virtualization. That said, it's harder to make security promises about HVCI if you're lacking TPM, Secure boot, etc
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If HVCI is enabled, some of those drivers would fail to load. Though "executable pool" is actually just a warning that the driver has a risk of not functioning correctly, but generally benign. That old intel graphics driver is our classic case of that risk becoming a reality
End of conversation
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If it's not 7th Gen, then I wouldn't bother. We had everything else compliant except that, and Excel was literally unusable.
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Excel performance with HVCI does significantly benefit from MBEC on modern CPUs... I've definitely been able to use it regardless, though I wasn't doing anything too involved
End of conversation
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