Want to add a padlock to your email messages? You can use encryption and digital signatures in new Outlook, classic Outlook, and Outlook on the web for work or school accounts to increase the security of messages. Encrypting an email message in Outlook means it's converted from readable plain text into scrambled cipher text. Only the recipient who has the private key that matches the public ...

Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

Find everything you need to manage your Microsoft account, Xbox profile, and more.

获取有关您的 Xbox Live 好友、聊天、群等的帮助。

Xbox Support 提供 Xbox、Game Pass 及帳單問題的協助，並在社群中取得建議與客戶服務。

When you remove all the contacts from the category, it will automatically disappear from your app. Tip: The categories are specific to Teams and will not be available in other products.

Shift-based tags: Reach shift-based people based on their schedule info in the Shifts app. You can use these tags to start new chats and in channel conversations. Automatic tags: Reach people by department or job title in channel conversations. These tags must be set up by your IT admin.

在 Windows 10 裝置上玩遊戲時，同時透過社交網路與朋友保持聯繫。 連結您的最愛，例如 Discord、Reddit、Steam 和 Twitch 等。 除了少數例外情況，您只需要連結帳戶一次。 例如，如果您從 Game Bar 連結帳戶，該帳戶將會連結至 Windows 版 Xbox 應用程式以及您的主機上。

Signing in connects the apps to the rest of Microsoft 365, letting you save files to the cloud, share files with others, and have your documents save automatically as you work.

在 Android 设备上安装 Authenticator Google Play 商店在中国不可用，因此只能从以下商店下载Microsoft Authenticator： 联想 Oppo – 搜索要从 Oppo 存储区下载Microsoft Authenticator。 三星