Microsoft will never proactively reach out to you to provide unsolicited PC or technical support. If you receive a phone call claiming to be from Microsoft, or see a pop-up window on your PC with a fake warning message and a phone number to call and get your "issue" fixed, it's better to be safe and not click any links or provide any personal information.

Learn how to protect your PC, identity, and data from tech support scams.

Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.

联系 Microsoft 支持人员。查找常见问题的解决方案，或从支持专员那里获取帮助。

OneNote Web Clipper 入门 单击“ 获取 ”按钮。 按照你正在使用的特定 Web 浏览器显示的屏幕说明进行操作。 如果出现提示，请确认任何安全消息，向 OneNote Web Clipper 授予与你的浏览器配合使用的权限。 若要配置 OneNote Web Clipper，请执行下列操作： 在浏览器中，打开任何网站，然后单击“ OneNote Web Clipper ...

Learn how to find a Windows product key for activation, and when you'll use a digital license instead.

Phishing (pronounced: fishing) is an attack that attempts to steal your money, or your identity, by getting you to reveal personal information -- such as credit card numbers, bank information, or passwords -- on websites that pretend to be legitimate. Cybercriminals typically pretend to be reputable companies, friends, or acquaintances in a fake message, which contains a link to a phishing ...

激活是一个技术过程，用于将产品密钥或数字权利与设备的硬件配置配对。 这不评估副本本身的真实性，也不保证 Windows 副本是 正版 的。 它只确保产品密钥或数字权利对硬件配置有效。 另一方面，验证是检查关键 Windows 许可文件是否未被损坏、删除或删除，以及是否必须接收某些更新和下载的 ...

Windows Server 2019 Windows 10, version 1809 Applies to: Windows Server 2019 This security update includes fixes and quality improvements that are part of the following update: June 9, 2026—KB5094123 (OS Build 17763.8874) 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 area of the change ...

Microsoft 支持可帮助你处理 Microsoft 产品的问题。 查找有关 Microsoft Copilot、Microsoft 365、Windows 11、Surface 等的操作方法文章、视频和培训。