As Intel’s microcode updates for Spectre Variant 2 can result in “higher than expected reboots and other unpredictable system behavior” that may lead to “data loss or corruption,” Microsoft has issued an emergency update to disable Spectre Variant 2 mitigation. Dell, HP, and Red Hat Enterprises have all already done something similar.



Intel is not the only major CPU maker having issues with Spectre Variant 2 patching. This bug also caused issues for devices with AMD processors, so much so that Microsoft paused the rollout of Windows updates for devices with AMD processors. Microsoft resumed these updates, but only after AMD worked with Microsoft to correct reported BSOD errors.

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Source: [H]ardOCP – Microsoft Issues Windows Out-of-Band Update That Disables Spectre Mitigations