为什么需要验证码？ 当你登录到你的 Microsoft 帐户时，我们可能会要求提供其他证明，证明确实是你的帐户。 最多可以添加 10 种不同的方法来验证登录，并且可以选择：

无法登录到 Hotmail 或 Outlook.com？ Microsoft 始终保持留意异常的登录活动，以防其他人试图登录到您的帐户。 如果您在去新地方的旅途中或使用新的设备，我们可能会要求您确认登录的确实是您。

Outlook 帐户每个邮箱最多可以有 100GB 的存储空间， (Exchange Online邮箱存储限制) 。管理员可以减少每个用户或全局的最大邮箱大小，有关详细信息，请参阅：如何在 Microsoft 365 环境中设置Exchange Online邮箱大小和限制。 “超出配额，你的帐户超出配额限制”

Which devices support cross-device copy and paste? Cross-device copy and paste is supported on Surface Duo and Android devices that are running One UI version 2.1 or above or select HONOR devices (1.22036.14.0 or later) or OPPO devices (1.23093.0 or later) or select ASUS devices.

Note : Once you've signed in, Skype will remember your sign in information when you close Skype or sign out and choose to remember your account settings. If you don't have a Skype or Microsoft account: Visit Skype.com from your browser and download Skype.

You can save directly to OneDrive from Microsoft Office files (like Word docs and Excel worksheets), PDFs, and other documents. If your PC has a built-in camera, you can automatically save copies of the photos you take directly to OneDrive so you’ll always have a backup.

To learn more, check out the Join a Teams meeting video. Join by link. All you need to join a Teams meeting is a link. Select Join the meeting now in your meeting invite to be taken to a page where you can choose to either join on the web or download the desktop app.. If you already have the Teams app, the meeting will open there automatically.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

How does multifactor authentication work? Let's say you're going to sign into your Microsoft account or work or school account, and you enter your username and password.If that's all you need then anybody who knows your username and password can sign in as you from anywhere in the world!

Important: When you close your Microsoft account, your email and contacts are deleted from our servers and can't be recovered.If you use your Microsoft account with Xbox, Skype, OneDrive, or other Microsoft services, you'll no longer be able to access those services.