如果工作表中包含未使用的数据，并且不包含正在使用的任何公式，请从电子表格中删除它们。 工作簿中的数据点越多，文件大小就越大。 删除未使用的数据会减小文件大小。 以较低的分辨率保存图片. 单击“文件”>“选项”>“高级”。

How to redeem a gift card, Xbox download code or token. Both Microsoft and Xbox gift cards and download codes and tokens work the same way: once redeemed to your Microsoft account, you can spend your balance at Microsoft Store online, on Windows or Xbox, and you can get downloads for the latest apps, games, movies, TV shows, and Surface, Xbox, and accessories.

某些地图应用（如 Windows 地图）依赖于已下载地图管理器服务（也称为 MapsBroker）。 如果你下载离线地图，则此服务将在后台运行以使这些地图保持最新。 因为它只是偶尔运行，所以它消耗的系统资源很少。

重要: Microsoft帐户、Windows 操作系统和其他Microsoft产品包括密码，以帮助保护你的信息。 本文提供了一些选项，可用于在忘记密码时重置或恢复密码。 请注意，如果这些选项不起作用， Microsoft支持无法帮助你检索或绕过丢失或忘记的密码。

To create the installation media, here's what you'll need: A PC with a reliable internet connection. The download time will vary, depending on your internet connection.

Note: The Wireless Display app is available on devices running Windows 11 version 22H2 and newer.If you're running an earlier version of Windows, launch the Connect app by entering connect in the search box on the taskbar, and selecting Connect in the list of results. To find out which version of Windows you're running, see Which version of Windows operating system am I running?

从授权零售商处购买 Windows 11 的盒装副本. 产品密钥. 可在 Windows 11 包装盒内的标签上找到产品密钥。 从授权零售商处购买 Windows 11 的数字副本. 产品密钥. 可在购买 Windows 11 后收到的确认电子邮件中或在可通过零售商的网站访问的数字保险箱中找到产品密钥。

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 ...

你还可以找到有关版本和所有已知问题的详细信息。 安装最近的更新可确保你同时获得可能错过的任何先前更新，包括任何重要的安全修复。 有关更新及其获取方式的详细信息，请参阅： Windows 11概述 - Windows 中的新增功能. Windows 11规范. Windows 11版本 22H2 的新增 ...

If you’re having sound or audio problems, the following suggestions might help. The tips are listed in order, so start with the first one, see if that helps, and then continue to the next one if it doesn’t.