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准备好安装了吗？ 在开始之前，请确保电脑或 Mac 满足 系统要求。. 如果你已兑换产品密钥，只需重新安装应用，或者知道你已通过工作或学校分配了许可证，则可以跳到登录部分 ，下载并安装 Microsoft 365 或 Office。 但是，如果是 首次 安装 Microsoft 365 或 Office，可能需要先执行一些步骤。

Example. Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter.

如果选择 " 使用 Internet 激活" 选项，激活向导将通过您的 Internet 连接自动与 Microsoft 授权服务器联系。如果您使用的是以前未使用过的有效产品密钥，则您的产品将立即激活。 如果选择 " 使用电话激活" 选项，请拨打 "激活向导" 中提供的电话号码，然后键入客户服务代理提供的确认号码。

Note: If the TODAY function does not update the date when you expect it to, you might need to change the settings that control when the workbook or worksheet recalculates. On the File tab, click Options, and then in the Formulas category under Calculation options, make sure that Automatic is selected.

If you have Link to Windows on your Surface Duo: Open the Link to Windows app by going into the Quick Access panel, and then tap and hold the Link to Windows icon.

When you're in a conference room and need to project, connect your PC using one of the cable connectors in the room, press the Windows logo key + P, and then choose one of the four options:. PC screen only.

Sign in using two-step verification or security info; Create app passwords in Security info (preview) Set up a phone call as your verification method

垃圾邮件和开放中继. 未经请求的商业电子邮件有时称为垃圾邮件或垃圾邮件。 垃圾邮件数量继续增加的main原因是，发送垃圾邮件的人几乎不需要发送任何费用;事实上，发件人甚至不必通过 SMTP (发送垃圾邮件，) 他们自己的 ISP 的电子邮件服务器发送垃圾邮件。

Microsoft Loop is a transformative co-creation experience that brings together teams, content and tasks across your tools and devices. Loop combines a powerful and flexible canvas with portable components that move freely and stay in sync across applications — enabling teams to think, plan, and create together.