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davidquez0207's avatar
davidquez0207
Copper Contributor
Oct 20, 2026

October 2026 Windows Update causing major issues

We have had about 50 computers in our organization giving boot failures after Windows restarts to apply the October update, KB5127648. Affected machines are Dell devices, both laptops and desktops. T...
configuration
deployment
Update management
JoBerg695's avatar
JoBerg695
Copper Contributor
Oct 26, 2026

same issue here

The affected devices we checked have a TPM-only protector (PCR 7, 11) and no recovery password protector, and no recovery key in Intune (dont know why yet). At the time of failure, BitLocker was suspended (the volume was accessible from WinPE without a key).

The healthy reference device (same model and firmware, on 9711) has a TPM protector and a recovery password.

On those two previously failing devices (Dell and a Dynabook ), we added a recovery password protector, backed it up to Entra ID, resumed BitLocker, then reinstalled KB5127648 and KB5127690. Both devices rebooted normally and are now on 26200.9711.

Workaround that works (from WinPE/WinRE):

manage-bde -unlock C: -RecoveryPassword <key>
dism /image:C:\ /cleanup-image /revertpendingactions