Summary. This security update makes improvements to Secure Boot DBX for the supported Windows versions listed in the "Applies to" section. Key changes include the following:

Get quick answers to common questions and learn how to use Notepad effectively with Microsoft Support.

Microsoft Edge 允许阻止来自特定网站的 Cookie，但这样做可能会阻止某些页面正确显示，或者你可能会从某个站点收到一条消息，告知你需要允许 Cookie 查看该网站。

Learn which languages are supported in Narrator in Windows and how to adjust your Narrator Settings.

Learn how to receive a refund or exchange for items purchased from Microsoft.

Update Microsoft Store. Select Start, then from the apps list, select Microsoft Store.In Microsoft Store, select Library > Get updates.If an update for Microsoft Store is available, it will start installing automatically.

Plug-ins or add-ons add functionality—such as audio effects or DVD capability—to Windows Media Player

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

Active content is additional functionality in a file or program, such as macros, add-ins, or data connections. This article lists types of active content that can be blocked by settings in Trust Center and which, when present in a document, cause display of the Message Bar when you open your file.

Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.