A digital signature attached to an email message offers another layer of security by providing assurance to the recipient that you—not an imposter—signed the contents of the email message.

Training: Learn how to create a spreadsheet, enter data, and create a chart in Excel.

Microsoft Teams offers different ways to access, receive, and manage notifications. These settings include how, when, and where your notifications appear, custom settings for channels and chat, appearance and sounds, turning off specific messages, and so on.

Try these solutions if sent messages in Outlook.com come back with a "delivery failed" error.

Microsoft Office has a feature that lets you send Outlook, Word, Excel, and PowerPoint files as Internet faxes. This feature relies on having the Windows Fax Printer Driver or Fax Services installed on the computer to send the faxes.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

如果尝试登录到帐户，但收到一条消息，表示该帐户被锁定，则这是因为与该帐户关联的活动可能违反了我们的使用条款。. 如何解锁 Microsoft 帐户

Edit a sent message. You can edit any message that you have sent to a chat or channel. Hover over the message and select Edit.

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

If you forgot your work or school password, never got a password from your organization, or have been locked out of your account, you can use your security info and your mobile device to reset your work or school password.