First time, infrequent senders, or senders marked [External] - While it's not unusual to receive an email or Teams message from someone for the first time, especially if they are outside your organization, this can be a sign of phishing.Slow down and take extra care at these times. When you get an email or a Teams message from somebody you don't recognize, or that Outlook or Teams identifies ...

Copilot for Microsoft 365 (for work) Copilot for Microsoft 365 is available now for enterprises and small businesses in over 160 regions and select languages.Before you can subscribe to Copilot for Microsoft 365, though, you need an active subscription to one of the following:

3. Validation on a form You can use the Validation Rule property of a control on a form to specify a criterion that all values input to that control must meet. The Validation Rule control property works like a field validation rule. Typically, you use a form validation rule instead of a field validation rule if the rule was specific only to that form and not to the table no matter where it was ...

In Outlook, the default font is 11-point Calibri in black. It's used when you compose new email messages. You can change the default font and its color, size, and style — such as bold or italic.

查找 Windows 7 或 Windows 8.1 的产品密钥. 卸载或重新安装 Windows 7 或 Windows 8.1 时，通常需要产品密钥。 通常，如果购买的是实物 Windows 拷贝，产品密钥应该在标签上或者在 Windows 随附包装盒中的卡上。

Wenn Sie Office Professional Plus, Visio Professional oder Project Professional über das Microsoft Workplace Discount Program-Angebot (ehemals als Microsoft Home Use Program bekannt) Ihres Arbeitgebers erworben haben, wählen Sie Ich möchte mich nicht anmelden oder ein Konto erstellen (unten auf dem Bildschirm) aus, und geben Sie Ihren Product Key ein.

For Windows 8 or Windows 8.1, swipe in from the right edge of the screen, and tap Search. If you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, and click Search.Type File Explorer in the search box, and then tap or click File Explorer.

解决安装 Windows SP1 时遇到的问题. 如果你尝试安装 SP1 并看到指示安装未成功的错误消息，这可能是因为用于安装更新的 Windows 维护服务商店出现问题，或者是因为你的防病毒软件阻止安装更新。

A workbook is a file that contains one or more worksheets to help you organize data. You can create a new workbook from a blank workbook or a template. By default, a new workbook contains three worksheets, but you can change the number of worksheets that you want a new workbook to contain. You can also add and remove worksheets as needed.

了解如何使用 Android、iOS 或 Windows 设备在 Xbox 上玩云游戏。