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MS-DEFCON 4: Dual-boot computers now safe to patch
ISSUE 21.39.1 • 2024-09-24 By Susan Bradley
In the August updates, Microsoft introduced a bug that impacted Windows users who dual-booted into Windows and Linux.
At first it was thought the bug had not been fixed in the September updates, but upon further investigation, I learned that it had been addressed. Because it is now fixed, I find no reason to delay updates further and am therefore lowering the MS-DEFCON level to 4.
Anyone can read the full MS-DEFCON Alert (21.39.1, 2024-09-24).