Select Review activity to check for any unusual sign-in attempts on the Recent activity page.If you see account activity that you're sure wasn't yours, let us know and we can help secure your account—if it's in the Unusual activity section, you can expand the activity and select This wasn't me.If it's in the Recent activity section, you can expand the activity and select Secure your account.

Get help and learn how to use Skype with Microsoft's official support page.

在 Windows 8.1 或 Windows RT 8.1 中查找操作系统信息. 要查找设备运行的 Windows 版本，请按 Windows 徽标键 键 + R，并在“打开”框中键入“winver”，然后选择“确定”。. 如果你的设备运行的是 Windows 8.1 或 Windows RT 8.1，那么有关详细信息，可以参阅以下内容：

A aplicação Microsoft Authenticator ajuda-o a iniciar sessão nas suas contas quando estiver a utilizar a verificação de dois passos.

FILTER 函数将返回一个数组，如果该数组是公式的最终结果，则将溢出。 这意味着，当按“Enter”时，Excel 将动态创建相应大小的数组范围。如果支持数据位于 Excel 表格中，若使用结构化引用，则从数组范围中添加或删除数据时，数组将自动重设大小。 有关详细信息，请参阅关于溢出数组行为的此 ...

Résoudre les problèmes liés à l'utilisation d'accessoires Bluetooth. Si vous pouvez activer la fonctionnalité Bluetooth, mais que vous rencontrez des problèmes d'association ou d'utilisation d’un accessoire Bluetooth, utilisez les instructions ci-dessous, qui peuvent vous aider à résoudre les problèmes courants liés à l'utilisation d'accessoires Bluetooth.

When you use Game Mode, Windows prioritizes your gaming experience by turning things off in the background. When you’re running a game, Game Mode:

Obtén información sobre cómo puedes usar la aplicación gratuita Microsoft Authenticator para iniciar sesión en todas tus cuentas sin usar una contraseña.

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

These commands give you the title of the document on the top of the page and a page number at the bottom of a printed document. These settings can't be saved, so all header and footer settings must be entered manually each time you want to print a document.