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Guidance for installing the security update for Secure Boot DBX: August 9, 2022

Microsoft released KB5012170 on August 9, 2022, a standalone security update that provides support for Secure Boot Forbidden Signature Database (DBX). Windows 8.1 and newer clients and Windows Server 2012 and newer servers must install this update regardless of whether BitLocker is enabled or supported on these devices. When attempting to install the update, you might receive error “0x800f0922”. See the known issues section in KB5012170: Security update for Secure Boot DBX: August 9, 2022. Your device might start up in BitLocker recovery mode after the update is installed. If you encounter this situation, check the following articles for guidance: Some devices might start up into BitLocker Recovery and Finding your BitLocker recovery key in Windows.

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Published: 26 August 2022
Updated: 26 August 2022
Platform: Windows Desktop, World tenant

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