IMPORTANT Microsoft released update KB5012170 on August 9, 2022. It provides support for Secure Boot Forbidden Signature Database (DBX). This is a standalone, security update. 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 your device. After you install the update, you might receive ...

August 9, 2022—KB5016623 (OS Build 17763.3287) Highlights Addresses security issues for your Windows operating system. Improvements This security update includes improvements that were a part of update KB5015880 (released July 21, 2022) and also addresses the following issues: Addresses an issue that might cause the Local Security Authority Server Service (LSASS) to leak tokens. This issue ...

Note NEW 8/26/22 IMPORTANT Microsoft released KB5012170 on August 9, 2022. It provides support for Secure Boot Forbidden Signature Database (DBX). This is a standalone, security update. 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 your device. After you install the update, you might ...

IMPORTANT Microsoft released update KB5012170 on August 9, 2022. It provides support for Secure Boot Forbidden Signature Database (DBX). This is a standalone, security update. 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 your device. After you install the update, you might receive ...

Note IMPORTANT Microsoft released update KB5012170 on August 9, 2022. It provides support for Secure Boot Forbidden Signature Database (DBX). This is a standalone, security update. 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 your device. After you install the update, you might ...

Note IMPORTANT Microsoft released update KB5012170 on August 9, 2022. It provides support for Secure Boot Forbidden Signature Database (DBX). This is a standalone, security update. 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 your device. After you install the update, you might ...

Highlights This update addresses security issues for your Windows operating system. Improvements This security update includes improvements that were a part of update KB5058499 (released May 28, 2025). The following summary outlines key issues addressed by the KB update after you install it. Also, included are available new features. The bold text within the brackets indicates the item or area ...

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Note NEW 8/26/22 IMPORTANT Microsoft released KB5012170 on August 9, 2022. It provides support for Secure Boot Forbidden Signature Database (DBX). This is a standalone, security update. 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 your device. After you install the update, you might ...

Note IMPORTANT Microsoft released update KB5012170 on August 9, 2022. It provides support for Secure Boot Forbidden Signature Database (DBX). This is a standalone, security update. 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 your device. After you install the update, you might ...