可以使用安全密钥作为组织中的无密码登录方法。 安全密钥是一种物理设备，它与唯一 PIN 一起使用以登录到工作或学校帐户。 由于安全密钥要求你拥有物理设备和只有你知道的内容，因此它被视为比用户名和密码更强大的验证方法。 使用安全密钥作为无密码身份验证方法目前以公共预览版提供 ...

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什么是安全启动？ 安全启动是统一可扩展固件接口中的一项安全功能， (基于 UEFI) 的固件，可帮助确保只有受信任的软件在设备的启动 (启动) 序列中运行。 它的工作原理是针对存储在设备固件中的一组受信任的数字证书 (（也称为证书颁发机构或 CA) ）验证预启动软件的数字签名。 作为行业标准 ...

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This security update includes fixes and quality improvements that are part of the following updates: January 13, 2026—KB5073724 (OS Builds 19045.6807 and 19044.6807) January 17, 2026—KB5077796 (OS Builds 19045.6811 and 19044.6811) Out-of-band January 24, 2026—KB5078129 (OS Builds 19045.6812 and 19044.6812) Out-of-band The following is a summary of the issues that this update addresses ...

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本文介绍了启用了 Windows 8.1、 Windows RT 8.1、 Windows Server 2012 R2、 Windows 8，Windows RT，Windows Server 2012，Windows 7 和 Windows Server 2008 R2 中的 根证书的 Windows 程序 的紧急更新的更新。应用此更新之前，请参阅更多 有关此更新，请查看本文中的 系统必备组件。 关于此更新 Windows 根证书程序允许受信任的根 ...

If you’re experiencing network or website connectivity issues, the Hosts file may be part of the problem. This article explains what the Hosts file is, how it works, and why resetting it to the default state can resolve common connection issues. What's the Hosts file The Hosts file is a plain‑text system file used by the operating system to map human‑friendly hostnames (such as contoso ...