Learn how to use drag and drop to transfer content between your Android device and PC.

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

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

Here's how to change the size of text, images, and apps in Windows. To change your display in Windows, select Start > Settings > Ease of Access > Display.To make only the text on your screen larger, adjust the slider under Make text bigger.To make everything larger, including images and apps, choose an option from the drop-down menu under Make everything bigger.

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 how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

Learn how to change the power mode on your Windows PC to preserve your battery, limit notifications, and background activity.

Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.

Windows Security is pre-installed on Windows 10 and ready for you to use at any time.

Si vous ne parvenez pas à vous connecter à votre compte de messagerie Outlook.com, Hotmail, Live ou MSN, ou si vous ne savez pas comment vous connecter ou vous déconnecter, voici quelques solutions.