The Windows 10 free upgrade offer ended on July 29, 2016. To upgrade to Windows 10, you will need to have a compatible PC and purchase a full version of the software.We recommend that you don’t install Windows 10 on an older device, as some Windows 7 devices are not compatible with Windows 10 or could experience reduced feature availability.

Default Office theme colors. The color palette of the Office theme prioritizes the creation of modern and accessible content. The previous Office theme has been renamed Office Theme 2013–2022 and can still be accessed in the theme galleries of each Office application.. Change a theme and make it the default in Word or Excel

sumproduct 使用单元格区域 (或创建数组 公式) 作为参数 (公式的各个部分，使其) 。 它将数组中的项相乘，然后对结果进行汇总。 此示例是一个购物清单，其中一个数组列出每个商品的成本，另一个数组列出将购买的商品数量。

In the snapshot, you'll be able to see the annotations over the screen that was being shared when the snapshot was taken. Select annotations to make changes to them.

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了解如何录制 Teams 会议。 捕获音频、视频、屏幕共享活动，并对Microsoft Teams 中的录制内容进行故障排除。

使 Excel 在检测到模式时可自动填充数据。 例如，年中的月份，月中的日期或数字序列。 此外，还可以分析数据（如拆分列中的名字和姓氏），或连接数据（如连接两列中的名字和姓氏）。

See how Xbox cloud gaming works on Android, Apple, and Windows devices, as well as Xbox consoles and Samsung smart TVs.

يقدم Xbox Support مساعدة للأسئلة Xbox وGame Pass وأسئلة الفوترة. احصل على المشورة وخدمة العملاء في مجتمع «Xbox Support».

在新 Teams 中时，选择新 Teams 顶部的“设置”和“更多 ” ，然后选择“设置 > 通知”> 打开 Windows 通知设置，打开 (或关闭) 通知。 在应用列表中查找 Microsoft Teams (工作预览) 并设置首选项。 添加另一个 Teams 帐户