If you're having trouble using the Outlook for Android mobile app, Open an in-app Outlook support ticket. If you have a work or school account that uses Microsoft 365 for business or Exchange-based accounts, there may be additional requirements set by your IT admin.

With External Access for Teams, you can add or invite anyone outside of your Teams org who uses Teams, Teams for personal use, Skype (for consumers), and Skype for Business to a one-to-one chat.

Nearby sharing in Windows lets you share documents, photos, links to websites, and more with nearby devices by using Bluetooth or Wi-Fi. You can share files between PCs that are running Windows 10 or Windows 11.

A key icon in the message list or reading pane indicates an encrypted message.. If you normally use Conversation view, you'll have to open the message in a new window to read it. There will be a link on the message to make this easier.

若要切换正在使用的键盘布局，请按住 Windows 键，然后重复按 空格键 以循环浏览所有已安装的键盘。 （如果此操作无效，说明仅安装了一种键盘。） 还可以在任务栏中选择语言缩写，然后选择要使用的语言或输入法。

Microsoft Authenticator backs up your account credentials and related app settings, such as the order of your accounts, to the cloud. You can then use the app to recover your information on a new device, potentially avoiding getting locked out or having to recreate accounts.

The CONCAT function combines the text from multiple ranges and/or strings, but it doesn't provide delimiter or IgnoreEmpty arguments. CONCAT replaces the CONCATENATE function.However, the CONCATENATE function will stay available for compatibility with earlier versions of Excel.

There are two types of rules in Outlook—server-based and client-only. Server-based rules When you're using a Microsoft Exchange Server account, some rules are server-based.These rules run on your mailbox on the Exchange mail server even when Outlook isn’t running.

Notes: If your Android device is running Android 11.0 or higher, you may be eligible for the multiple apps experience. Compatible devices are marked with an asterisk (*).

In the new Outlook for Windows, a toggle appears at the top right of the Outlook window. While the toggle is turned on, if you try to launch classic Outlook for Windows or Windows Mail you'll be automatically redirected to new Outlook for Windows.