Windows 安全启动证书过期和 CA 更新 - Microsoft 支持
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 ...
How to recover a hacked or compromised Microsoft account
Learn how to recover a hacked or compromised account, what to do next, and how to prevent your account from being compromised in the future.
Applies To:
Outlook.com
设置安全密钥作为验证方法 - Microsoft 支持
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 ...
February 10, 2026—KB5075912 (OS Builds 19045.6937 and 19044.6937 ...
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 ...
Secure Boot Certificate updates: Guidance for IT professionals and ...
Microsoft Customer Support resources To contact Microsoft Support, see: Microsoft Support and then click Windows. Support for business and then click Create to create a new support request. After you create the new support request, it should look like the following:
紧急的受信任的根更新 Windows Windows 中的根证书程序的支持 - Microsoft 支持
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 ...
Contact Us - Microsoft Support
Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.
Contact - Microsoft Support
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Digitally sign your VBA macro project - Microsoft Support
This article describes how you can digitally sign a macro project on Windows by using a certificate. If you don't already have a digital certificate, you'll need to get one.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2024, Outlook 2024, PowerPoint 2024, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, Visio Professional 2013
关于正版 Windows - Microsoft 支持
正版 Windows 由 Microsoft 发布,并由 Microsoft 或值得信赖的合作伙伴授予相应许可并提供支持。 你需要正版 Windows 才能访问可选的更新和下载,以帮助你充分利用电脑。 下面是一些关于正版 Windows 软件的常见问题解答。