Microsoft May security patch fails for some due to boot partition size glitch
Summary
Microsoft's May Security Update for Windows 11 is failing to install for some users due to an issue with the EFI System Partition (ESP) size. The update can fail during the reboot phase, leaving systems unprotected. Microsoft has provided a registry fix as a workaround, but consultants advise caution and recommend increasing the partition size.
IFF Assessment
This article details a critical failure in a security update's deployment, leaving users vulnerable and undermining trust in the patching process.
Defender Context
Defenders need to be aware of this installation failure and its root cause to ensure their Windows 11 systems receive critical security patches. They should follow Microsoft's guidance or recommended workarounds to resolve the boot partition size issue and successfully apply the update, preventing potential vulnerabilities from being exploited.