If you need to sum a column or row of numbers, let Excel do the math for you. Select a cell next to the numbers you want to sum, select AutoSum on the Home tab, press Enter, and you’re done. When you select AutoSum, Excel automatically enters a formula (that uses the SUM function) to sum the numbers. Here’s an example.

In Outlook, the black color theme includes dark mode, which provides a black background (instead of white) for the message window. You can switch to a white background for the message window if you prefer.

Contactez le support Microsoft. Recherchez des solutions aux problèmes courants ou bénéficiez de l’aide d’un agent de support.

Country/Region. Country/Region code. Phone number. Language. Australia. N/A. 13 20 58. English. New Zealand. N/A +64. 0800 800 004 9 368 5680. English

了解如何升级Windows 10 家庭版Windows 10 专业版访问更高级的安全性和网络功能。

Learn how to manage extensions in Microsoft Edge, including adding, disabling, or removing them as needed.

A delivery receipt confirms delivery of your email message to the recipient's mailbox, but not that the recipient has seen it or read it. A read receipt confirms that your message was opened.

Note: To create an email message using a keyboard shortcut, press Ctrl + Shift + M.

The Office app is running in the background. If the file is not shared on a network or if you are certain that no one is currently editing it, then an instance of the Office app with the file open might be running in the background.

Track your tasks in My Tasks. Planner offers a purpose-built My Tasks view, designed to centralize all the tasks relevant to you. My Tasks is organized into four distinct views, each serving a unique purpose: Private tasks: Private tasks is a place for you to quickly jot down tasks at the speed of thought.This is a place where you can create tasks that do not belong to a plan yet.