下载并安装或重新安装 Office 2019、Office 2016 或 Office 2013. 如果这是你 第一次 安装 Microsoft 365，则可能需要先执行一些设置步骤。. 展开下面的 “了解详细信息”部分。. 但是如果是重新安装 Microsoft 365，且已兑换了产品密钥并拥有与 Microsoft 365 相关联的帐户，请转 ...

If you can't sign into your Microsoft account, use our guided tool below to help you find the correct solution. Use your Microsoft account to sign in to Microsoft services like Windows, Microsoft 365, OneDrive, Skype, Outlook, and Xbox Live.

MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.

Microsoft 于 2022 年 3 月发布了Office安全更新和非安全更新。. 这些更新旨在帮助我们的客户保持其计算机的最新状态。. 建议安装所有适用于你的更新。. 若要下载更新，请选择以下列表中的相应知识库文章，然后转到本文的"如何下载并安装更新"部分。.

Microsoft has released a Microsoft security advisory about this issue for IT professionals. The security advisory contains additional security-related information. To view the security advisory, visit the following Microsoft website: http://www.microsoft.com/technet/security/advisory/2506014.mspx.

培训：了解如何快速开始使用 Microsoft 365、共享和协作、通过 Microsoft Teams 工作、随时随地工作以及试用 Microsoft 365 的出色功能。.

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