重新激活 Microsoft 365 或 Office
或者,如果您已在计算机上成功安装了 Microsoft 365 或 Office,但需要有关激活或重新激活它的帮助,请转到: 对于 Microsoft 365 - 激活 Office。 对于 Microsoft 365 Mac 版 - 激活 Office for Mac。 对于 Office 2021、2019 或 2016 - 在其他设备上重新安装或安装 Office 后激活 Office。
Applies To:
Office 2021, Office 2019, Office 2016, Office 2013, Microsoft 365 for home
Sign in to Viva Engage | Microsoft Support
With Viva Engage on your PC, Mac, or mobile device, you can: Connect and engage across your organization. Tap into the knowledge of others. Use your Inbox to view, prioritize, and manage the most important messages and announcements. Search for experts, conversations, and communities. Join communities to stay informed, connect with your co-workers, and gather ideas. Participate in ...
Add or remove items from a drop-down list | Microsoft Support
After you create a drop-down list, you might want to add more items or delete items. In this article, we'll show you how to do that depending on how the list was created. If someone else created your drop-down list, you'll need to identify how it was created. Select one of the cells that has the drop-down list. On the Data tab, expand Data Tools, and select to Data Validation. On the Settings ...
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel 2024, Excel 2024 for Mac, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2016
Create email templates in Outlook | Microsoft Support
Use email templates to create and save messages with content that rarely changes, so you can reuse them when needed. In new Outlook for Windows, classic Outlook, and Outlook on the Web, you can save templates using the Mail Templates built-in feature or the My Templates add-in, depending on the content and purpose of the template.
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016, Outlook.com, New Outlook for Windows
Corrigir dispositivo de saída de áudio ausente ou não detectado no ...
Windows 11 Windows 10 O Windows pode não detetar um dispositivo de saída de áudio se o controlador de áudio necessário estiver em falta, desatualizado, desativado ou não estiver a carregar corretamente. Nesta situação, as opções de som podem não aparecer nas Definições ou o Windows pode apresentar um erro que indica que não existe nenhum dispositivo de áudio instalado. Esta ...
August 2026 updates for Microsoft Office | Microsoft Support
Introduction Microsoft released the following security updates for Office in August 2026. These updates are intended to help our customers keep their computers up to date. We recommend that you install all updates that apply to you. To download an update, select the corresponding Knowledge Base article in the following list. List of Office updates released in August 2026 Microsoft Office 2016
PC 초기화 | Microsoft Support
Windows 11 Windows 10 요약 Windows에서 PC를 다시 설정하는 것은 디바이스를 원래 상태로 복원할 수 있는 강력한 기능으로, 성능 문제, 소프트웨어 문제 또는 단순히 새로운 시작을 원하는지 여부에 관계없이 유용할 수 있습니다. 이 기능은 사용자에게 친숙하도록 설계되었으며 다양한 요구 사항에 맞는 몇 ...
ファイル履歴を使用したバックアップと復元 | Microsoft Support
ファイル履歴は、個人のファイルやフォルダーを偶発的な損失や破損から保護するのに役立つ、Windows の便利な機能です。 ファイルのコピーを自動的に保存するバックアップ システムと考えて、問題が発生した場合に簡単に復元できます。 ファイルを誤って削除したり、不要な変更を加えたり ...
Use the COUNTIF function in Microsoft Excel
Examples of using COUNTIF in Excel To use these examples in Excel, copy the data in the following table, and paste it in cell A1 of a new worksheet.
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel 2024, Excel 2024 for Mac, Excel 2021, Excel 2021 for Mac
Buscar la clave de recuperación de BitLocker | Microsoft Support
Resumen Es necesaria una clave de recuperación de BitLocker cuando BitLocker no puede desbloquear automáticamente una unidad cifrada en Windows. Este es un número de 48 dígitos que te permite recuperar el acceso a la unidad.