Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.

当在新设备中首次启动 Windows 10 时，设备上已安装的防病毒保护程序即是你的默认安全应用。但是，Windows 安全中心已预安装并可随时使用。

查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持，并了解安装、更新、隐私、安全等方面的信息。

了解如何更改设置以启用安全启动（如果无法升级到 Windows 11因为你的电脑当前无法安全启动）。

Learn how to record Teams meeting. Capture audio, video, screen sharing activity, and troubleshoot recordings in Microsoft Teams.

了解如何从 Windows 10 家庭版升级到 Windows 10 专业版或从 Windows 11 家庭版升级到 Windows 11 专业版，包括如何使用有效产品密钥或 Microsoft Store。

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

These instructions may help with troubleshooting activation by removing all Office license files from your Mac. For example, if you previously installed a one-time purchase of Office for Mac and have switched to Microsoft 365, you may not be seeing subscription features because your copy of Office is still using your old license.

Si tienes problemas de sonido o audio, las siguientes sugerencias pueden ayudarte. Las sugerencias se enumeran en orden, por lo que debes empezar por la primera; comprobar si se soluciona el problema y, de no ser así, continuar por la siguiente.

Here are a few different ways to find help for Windows. Search for help - Enter a question or keywords in the search box on the taskbar to find apps, files, settings, and get help from the web.