App & browser control in Windows Security provides the settings for Microsoft Defender SmartScreen, which helps protect your device from potentially dangerous apps, files, websites, and downloads.

Note: Cross-device syncing of Microsoft Entra user activity history will stop starting in January 2024.Microsoft will stop storing this data in the cloud, aligning with the previous change for Microsoft accounts (MSA) in 2021. The timeline user experience was retired in Windows 11, although it remains in Windows 10.

Learn about Xbox online safety so you can manage your family's accounts.

Limited emergency calling Skype is not a replacement for your telephone and has limited emergency calling capabilities depending on your country.

Microsoft 支援服務可協助您處理 Microsoft 產品。 尋找適用於 Microsoft Copilot、Microsoft 365、Windows、Surface 等的使用方法文章、影片和訓練。

Get expert help, training, and support for your Microsoft PC accessories with easy access to resources and guidance.

These seizures may have a variety of symptoms, including lightheadedness, altered vision, eye or face twitching, jerking or shaking of arms or legs, disorientation, confusion, or momentary loss of awareness.

从 Microsoft 获取免费的 Windows 主题，以个性化设置电脑的背景、颜色和声音。

You need to enable JavaScript to run this app.

获取 Microsoft Edge 的帮助和支持。 查找 Microsoft Edge 支持内容、操作方法文章、教程等。