A list of Excel training, from entry level to advanced skills, plus templates and other resources.

You use the SUMIF function to sum the values in a range that meet criteria that you specify. For example, suppose that in a column that contains numbers, you want to sum only the values that are larger than 5.

In Windows 11, you decide when and how to get the latest updates to keep your device running smoothly and securely. This article will help you answer questions and troubleshoot common problems with your Windows 11 update.

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.

How to correct a #N/A error in the VLOOKUP function. Look up values with VLOOKUP, INDEX, or MATCH. HLOOKUP function. Learn how to use function VLOOKUP in Excel to find data in a table or range by row. Our step-by-step guide makes vlookup in excel easy and efficient.

发送遇到中继错误的电子邮件时，SMTP (传出) 电子邮件服务器可能会返回电子邮件，其中包含如下错误消息之一：. “邮件无法发送，因为其中一个收件人被服务器拒绝。. 被拒绝的电子邮件地址为“< someone@example.com >”。. 主题：“<测试>”，帐户：“<测试 ...

NETWORKDAYS.INTL returns the number of whole workdays between two dates using parameters to indicate which and how many days are weekend days. Weekend days and any days that are specified as holidays are not considered as workdays.

Excel 網頁版中的新增功能. 如需有關最新更新的詳細資訊，請流覽 目前通道版本資訊。. 若要瞭解即將提供給 Microsoft 365 測試人員的新功能，請移至 Microsoft 365 測試人員版本資訊 。. 瞭解Excel 網頁版、如何開始使用，以及即將推出的功能藍圖。.