Firewall & network protection in Windows Security lets you view the status of Microsoft Defender Firewall and see what networks your device is connected to.

Learn how to upgrade your existing device to Windows 10 or buy a new PC. Get answers to common questions about upgrading to Windows 10.

系统要求. 手机连接 体验从 Windows 电脑和 手机连接 开始。 从电脑中，可以使用预安装在设备上的连接至 Windows 应用或从 Google Play 或 Samsung Galaxy Store 下载的应用连接到选择 Android、Samsung、HONOR、OPPO 和华硕设备。

Import to Outlook app. Import email messages, contacts, and other items into Outlook for Mac. Import a .pst file into Outlook for Mac from Outlook for Windows

Get help and support for Microsoft Edge. Find Microsoft Edge support content, how-to articles, tutorials, and more.

Enter your current password, enter your new password, and then select Save.

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If you already have an account signed in to OneDrive and you want to add or remove another account, you’ll do that in OneDrive Settings.

Learn why you received a notification about unusual activity in your account and what to do next.

Designed by media lovers for media lovers. Windows Media Player 12—available as part of Windows 7, Windows 8.1, and Windows 10*—plays more music and video than ever, including Flip Video and unprotected songs from your iTunes library!