Windows users who have installed a new KB5012170 security update for Secure Boot have encountered various issues, ranging from boots failing with BitLocker Recovery prompts to performance issues.
During the August 2022 Patch Tuesday, Microsoft launched the standalone KB5012170 ‘Security update for Secure Boot DBX’ to resolve vulnerabilities present in numerous UEFI bootloaders that menace actors may use to bypass the Windows Secure Boot characteristic and execute unsigned code.
KB5012170 Update causes issues
In addition to the 0x800f0922 error, Windows customers are actually reporting issues with Windows after putting in the KB5012170 update.
For those affected by the Bitlocker recovery display, you may usually discover your recovery key saved in your Microsoft Account. Instructions on find out how to discover this info may be discovered on this Microsoft assist doc.
BitLocker is a drive encryption feature designed to keep data secure. The restore process restores access to the data and requires the user to provide a long password (or the domain administrator can obtain the password through Active Directory Domain Services). Anthony told us that he was able to sign in to Azure and get the recovery keys.
For enterprise customers, Windows admins can retrieve the Bitlocker recovery key from the Active Directory Users and Computers.
verify for up to date UEFI firmware earlier than making an attempt to put in this update.
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