Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Open the message that you want to recall. You must double-click to open the message. Selecting the message so it appears in the reading pane won't allow you to recall the message. If you have the Classic Ribbon, from the Message tab, select Actions > Recall This Message.

If your system is asking you for your BitLocker recovery key, the following information may help you locate your recovery key and understand why you're being asked to provide it. Important: Microsoft support is unable to provide, or recreate, a lost BitLocker recovery key.

Use the Office offline installer to install Office 2016 or Office 2013 if you don't have an active Internet connection or you're having problems with slow speed or unreliable connections.

Xbox Chat (13) and Xbox Social (14) – Start a text or voice chat, one on one or in a group. Connect with friends or make new ones and join a friend’s PC game or invite them to join yours. For more info, go to: Use Game Bar to play and chat with friends.

取得 Skype Lite 的 Skype 分享相片、檔案及視訊支援，讓您不論身在何處都能與親朋好友保持聯繫。

在 Lync 中，群組是您建立的連絡人集合，讓您可以快速在顯示中查看多位連絡人，或同時與他們進行通訊。 您決定您需要的群組以及群組的成員。

根據預設，您的小組是 [私人] 小組，這表示您必須主動新增您要加入小組的人員或群組。. 如果您要讓組織內的任何人都能尋找並加入這個小組，則選取 [公開]。. 新增成員。. 您可以新增人員、群組，或甚至是整個連絡人群組。. 如果您需要新增組織外部的人員 ...

请确保将音频输入和输出分配给要用于群聊天的音频设备。 在 “群”小组件中，选择 “群”选项 … 按钮，然后选择“群”音频。 在“音频”输出和“音频”输入下，从选择下拉列表中选择音频设备。

Microsoft 365 群組 是一種服務，可搭配您已使用的工具 Microsoft 365 讓您能夠與您的小組成員共同作業，包括撰寫文件、 建立試算表、 處理專案計劃、 排程會議或傳送電子郵件。 本文會協助介紹群組的功能，並提供後續步驟的實用連結。