Try these solutions if you can't sign in to your Outlook.com, Hotmail, Live, or MSN email account, or you're not sure how to sign in or sign out.

Contact Microsoft Support. What's new. Surface Pro. Surface Laptop. Surface Laptop Studio 2. Surface Laptop Go 3. Microsoft Copilot. AI in Windows. Explore Microsoft products.

Learn how you can free up drive space in Windows. Keep your PC running smoothly and up to date by increasing the disk space.

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.

Outlook and Outlook.com may be able to detect your account's mailbox settings automatically, but for other non-Microsoft accounts, you may need to contact your email provider for their settings.

要查找你所在国家/地区的客服电话号码，请单击一个地区并查找你所在的国家/地区。 本页提供 Microsoft 客服的电话号码。

Find out how to submit a request for a refund for a purchase of digital Xbox content.

DirectX 是许多 Windows 游戏都需要的一种多媒体技术套件。 如果你的电脑未安装正确版本的 DirectX（产品包装盒上应标有所需的版本），游戏可能无法正常运行。

Microsoft Support offers assistance for Microsoft products, including how-to articles, videos, and training for various software and devices.

It's important to have Microsoft Defender Firewall on, even if you already have another firewall on. It helps protect you from unauthorized access.