Check your printer manufacturer’s support site. To find it, search the internet for the name of your printer manufacturer plus the word “support,” such as “HP support.”

Professional Direct Support for Microsoft 365 provides additional advisory support and proactive services to help plan, implement, maintain, and optimize Microsoft 365 solutions that align to your business's needs, as well as reactive support to assist you along the way. Learn more at Professional Direct Support for Microsoft 365.

Learn how to find your Windows product key for activation or when to use a digital license instead.

编辑导航 用户可在网站导航中添加或删除链接。 有关编辑网站导航的详细信息，请参阅自定义 SharePoint 网站中的导航。 有关更改网站导航外观的信息，请参阅更改SharePoint网站的外观。 添加网站页脚 可以添加网站页脚并编辑指向通信网站 页面的页脚

Safe mode starts Windows in a basic state, using a limited set of files and drivers. If a problem doesn't happen in safe mode, this means that default settings and basic device drivers aren't causing the issue.

Excel for Microsoft 365 Excel for Microsoft 365 for Mac Excel for the web Excel 2021 Excel 2021 for Mac Excel 2019 Excel 2019 for Mac Excel 2016 More... Less. Worksheet functions are categorized by their functionality. Click a category to browse its functions. Or press Ctrl+F to find a function by typing the first few letters or a descriptive word.

This article explains how you can get or create a digital signature for use in Office documents. To learn more about how to use them in Office documents, see Add or remove a digital signature in Office files.. What is a digital signature?

下面是如何使用 VLOOKUP 的示例。 =VLOOKUP(B2,C2:E7,3,TRUE) 在此示例中，B2 是第一个 参数，即函数运行所需的数据元素。VLOOKUP 第一个参数是要查找的值。 此参数可以是单元格引用，也可以是固定值，例如“smith”或 21,000。

Note: The TEXT function converts numbers to text, which may make it difficult to reference in later calculations.It’s best to keep your original value in one cell, and then use the TEXT function in another cell. Then, if you need to build other formulas, always reference the original value and not the TEXT function result.

Setting up the modem and Internet connection. After you have all the equipment, you'll need to set up your modem and Internet connection. If your modem wasn't set up for you by your Internet service provider (ISP), follow the instructions that came with your modem to connect it to your PC and the Internet.