查找 Windows 7 或 Windows 8.1 的产品密钥. 卸载或重新安装 Windows 7 或 Windows 8.1 时，通常需要产品密钥。. 通常，如果购买的是实物 Windows 拷贝，产品密钥应该在标签上或者在 Windows 随附包装盒中的卡上。. 如果 Windows 已预先安装在计算机上，产品密钥应显示在设备 ...

Select Install (or depending on your version, Install apps> ). From the home page select Install apps (If you set a different start page, go to aka.ms/office-install .) For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn/account. For Microsoft 365 Germany go to portal.office.de/account.

了解如何在移动设备、Windows 设备或 Xbox 主机上兑换 Microsoft/Xbox 礼品卡或其他代码。按“开始”按钮 ，然后在“搜索”框中输入“商店”。 从结果中选择 Microsoft Store 以打开应用。选择屏幕右上角的帐户，然后选择 兑换充值码或礼品卡。输入由 25 个字符组成的代码，选择 下一步，然后按照提示操作。

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。 通过检查管理员上方是否显示电子邮件地址，确认管理员帐户也是你的 Microsoft 帐户。 如果显示了电子邮件地址，则这是 Microsoft 帐户。

To create installation media, go to the software download website, where you'll find step-by-step instructions. On that website, you can select a version of Windows and create your own installation media using either a USB flash drive or a DVD. To go directly to one of the versions, select one of these links: Windows 10 (Then select Download now.)

请求更换 Xbox 控制器. 如果控制器未正常工作并且需要更换，请在此页面底部输入控制器的序列号。. 可以在电池盒槽内条形码下找到此序列号。. 需要记住的事项：. 控制器序列号的长度为 14 个字符，并且不包含短划线。. 如果从未连接过控制器，或者在最近 48 ...

Note: The steps to install the 2019, 2016, or 2013 versions of Office Professional Plus, Office Standard, or a stand-alone app such as Word or Project might be different if you got Microsoft 365 through one of the following: Microsoft Workplace Discount Program (formerly known as Home Use Program): If you bought Microsoft 365 for personal use through your company, see Install Office through ...

How to open PC Health Check. In Windows, use Search on the taskbar to search for “PC Health Check,” then select it from the list of results. If a PC Health Check update is available, you can quickly install it for the latest version. If you don't have PC Health Check installed, you can install it by going to https://aka.ms ...

双击页眉或页脚区域以打开 “页眉 & 页脚 ”选项卡。. 选择“ 链接到上一个” 以关闭各部分之间的链接。. 选择 “删除页眉”或“删除页脚 ”。. 添加或更改页眉或页脚中的内容。. (如果要删除或更改页眉和页脚，则需要重复步骤 3-5。. 若要返回到文档正文 ...

Tips: While signing in, select Yes at the "Stay signed in?" prompt if you want to go straight to your mailbox next time (not recommended for shared computers). Alternatively, check the "Don't show this again" box and select No to be prompted for your password each time.. If you can't sign in, or have forgotten your username or password, use our sign-in troubleshooter.