Check the Xbox services, games, and apps for any service outages.

To verify that your digitally signed message was received unaltered by the intended recipients, select the Request S/MIME receipt for all S/MIME signed messages check box. You can request notification telling you who opened the message and when it was opened, When you send a message that uses an S/MIME return receipt request, this verification information is returned as a message sent to your ...

Microsoft has added OAuth support for Yahoo! accounts in the Windows 10 Creators update. To install the Creators Update now, go to the software download site, and select Update now.For more information about the update, see Windows 10 Creators Update is here.. If you have a Japanese Yahoo! email account you will need to do the following:

若要向 “安全发件人和收件人”添加条目，请在“ 在此处输入发件人或 域”文本框中要标记为安全的电子邮件地址或域，然后按 Enter 或选择文本框旁边的 “添加 ”图标 。. 例如，要将来自以 contoso.com 结尾的地址的所有电子邮件标记为安全，请在文本框中输入 contoso.com。

Advanced email security. As a Microsoft 365 subscriber, you get enhanced security tools that help protect your inbox from phishing and malware.

借记卡上的资金不足; 信用卡已到期; 你的信用卡被盗，因此你关闭了该帐户; 你收到了一张新信用卡，并关闭了旧信用卡

使用文件共享、云服务或其他解决方案发送大型文件，以便在 Outlook 中解决文件大小限制。

Important: If your Microsoft cloud storage is full, you cannot send or receive email.Messages sent to you while your storage was full are bounced back to the sender and are unrecoverable. Check your mailbox storage to see what's taking up space. Learn more about recent changes.

本页提供 Microsoft 客服的电话号码。

如果你收到有关 Microsoft 帐户上异常活动的电子邮件，或者你担心其他人可能使用了你的帐户，请转到“最近活动”页。 你将看到你的 Microsoft 帐户在过去 30 天内的登录时间，以及任何特定于设备或应用的信息。