如果无法登录到Microsoft帐户，大多数问题都可以通过登录帮助程序工具进行识别。 该工具将要求你输入尝试登录时使用的电子邮件地址或移动电话号码，并检查你提供的详细信息。

When you start a focus session, a focus timer will appear on screen. To use additional focus tools in the Clock app, expand the focus timer to get the full view of the Clock app.

Microsoft 365 subscribers have access to a growing library of thousands of royalty-free images, icons, illustrations, videos, and more to use in their documents, presentations, workbooks, and emails.

Learn about the circular reference warning message. The first time Excel finds a circular reference, it displays a warning message. Select OK or close the message window. When you close the message, Excel displays either a zero or the last calculated value in the cell.

如果已选择“共享”按钮，其他人会收到一封电子邮件，邀请他们打开文件。他们可以选择链接打开工作簿。 将打开 Web 浏览器，并在 Excel 网页版 中打开工作簿。 如果他们想要使用 Excel 桌面应用进行共同创作，可以选择“在桌面应用中编辑”。但是需要使用支持共同创作的 Excel 应用版本。

Learn how to tell if your Office software is genuine. To help determine if your Microsoft software is genuine, go to our How to Tell site for more information. Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report counterfeit software, and find out what your shopping and licensing options are.

Set the degree of precision. On the All Methods tab, in the Constraint Precision box, type the degree of precision that you want. The smaller the number, the higher the precision. Set the degree of convergence. On the GRG Nonlinear or Evolutionary tab, in the Convergence box, type the amount of relative change that you want to allow in the last five iterations before Solver stops with a solution.

Using the product key provided by a school or organization. If your school or organization has a volume license agreement for Office, then you are using a different version of Office that uses volume license keys.

Email与 Microsoft 帐户关联的地址和电话号码称为别名，它们使用相同的联系人、在线存储、订阅和帐户设置。 可以使用任何别名登录到 Microsoft 服务或 Windows 和 Xbox 设备，并且可以选择其中任何一个来发送和接收电子邮件。

Controller serial numbers are 14 characters long and don’t include dashes. Your controller serial number may not be recognized if you’ve never connected your controller, or if you connected for the first time within the last 48 hours.; If you have the Xbox Elite Wireless Controller Series 2, the 14-character serial number is in the lower center on the back of the controller.