Finding your BitLocker recovery key in Windows - Microsoft Support
If your system is asking you for your BitLocker recovery key, the following information may help you locate your recovery key and understand why you're being asked to provide it. Important: Microsoft support is unable to provide, or recreate, a lost BitLocker recovery key.
Sum data by using a query - Microsoft Support
Understand ways to sum data. You can sum a column of numbers in a query by using a type of function called an aggregate function. Aggregate functions perform a calculation on a column of data and return a single value. Access provides a variety of aggregate functions, including Sum, Count, Avg (for computing averages), Min and Max.
Applies To:
Access for Microsoft 365, Access 2021, Access 2019, Access 2016
Uninstall or remove apps and programs in Windows
There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.
How to use the PC Health Check app - Microsoft Support
PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems. It is periodically updated based on customer feedback to help you make the most of your Windows PC. How to open PC Health Check. In Windows, use Search on the taskbar to ...
Install Quick Assist - Microsoft Support
If Microsoft products on your macOS device are not working as expected, contact for assistance. Your Microsoft Support agent will guide you through the process of downloading and installing it on your device. Quick Assist for macOS is not available outside of Microsoft Support interactions.
使用 SUM 函数对区域中的数字求和 - Microsoft 支持
可以使用 简单的公式对) 一组单元格 (区域中的数字求和，但在处理多个数字时 ，sum 函数 更易于使用。 例如，=sum (a2：a6) 出现键入错误的可能性小于 =a2+a3+a4+a5+a6。
Applies To:
Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
使用 SUM 函數來加總範圍中的數字 - Microsoft Support
您可以使用 簡單的公式加總 範圍中的數位， (一組單元格) ，但使用多個數位時，更容易使用 sum 函 數。 例如與 =a2+a3+a4+a5+a6 相比，=sum(a2:a6) 較不容易輸入錯誤。
Applies To:
Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
Using product keys with Office - Microsoft Support
If you paid for an Office product to be included on your new Windows PC, a digital product key is transmitted to your PC when you activate Windows. You won't receive a printed product key. Instead, you'll see a message similar to the following when you start Word (or any Office app).
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Microsoft 365 for home, InfoPath 2013
如何更正 AVERAGE 或 SUM 函数的 #VALUE! 错误 - Microsoft 支持
如果 AVERAGE 或 SUM 引用包含 #VALUE! 错误的单元格，则公式将引发 #VALUE! 错误。. 为了忽略错误值，我们将构建一个公式，忽略参考范围中的错误，同时使用剩余的“正常”值计算平均值。. 为实现此方案，我们结合使用 AVERAGE 以及 IF 和 ISERROR，确定指定范围内是否 ...
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel 2013
使用 SUM 函數來加總範圍中的數字 - Microsoft 支援服務
您可以使用 簡單的公式加總 範圍中的數位， (一組單元格) ，但使用多個數位時，更容易使用 sum 函 數。 例如與 =a2+a3+a4+a5+a6 相比，=sum(a2:a6) 較不容易輸入錯誤。
Applies To:
Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016