In this article Overview How a Secure Boot certificate servicing works Where to start when troubleshooting Secure-Boot-Update scheduled task Why a scheduled task is used The AvailableUpdates registry bitmask Integration with OEM firmware Common failure scenarios and resolutions Reference and internals AvailableUpdates bits used for certificate servicing Expected progression (AvailableUpdates ...

了解如何註冊您的 Xbox 產品，以便您要求和追蹤維修服務、查看您的保固服務，以及購買延長保修計劃。 還有取消註冊和取消 ...

Applies to: Windows Server 2019 This security update includes fixes and quality improvements that are part of the following update: April 14, 2026—KB5082123 (OS Build 17763.8644) April 19, 2026—KB5091573 (OS Build 17763.8647) Out-of-band The following is a summary of the issues that this update addresses when you install this update. The bold text within the brackets indicates the item or ...

Delta Ring (2604.260409-2035) Hey XBOX Insiders! We are releasing a new XBOX Update Preview to the Delta ring today. Continue reading below to learn all about what's included with this update.

Summary A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This is a 48‑digit number that lets you regain access to your drive.

深入了解 Xbox 網路上可能發生與帳戶相關的違規。

Learn why age verification is required in Singapore, what happens if you don't verify, available verification methods, and how your data is protected.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender. Download Microsoft Defender on your devices either by: Scanning the following QR code Searching for Microsoft Defender in your app store Sharing with your devices, the following link: Copy link We encourage you to install Microsoft Defender on at least five devices per person. Ready to give it ...

Omega Ring (2605.260429-2200) Hey XBOX Insiders! We are releasing a new XBOX Update Preview to the Omega ring today. Continue reading below to learn all about what's included with this update.