Digital signatures and certificates - Microsoft Support
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public.It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, PowerPoint 2021, Access 2021, Visio Professional 2021, Visio Standard 2021, Excel 2019, Word 2019, PowerPoint 2019, Access 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, PowerPoint 2016, Access 2016, Visio Professional 2016, Visio Standard 2016
Meeting options in Microsoft Teams - Microsoft Support
Enable this setting to give participants more discretion over how they want to be presented in a meeting. Allow attendance report. Attendance reports contain meeting attendance details, including how long attendees stayed, and how long your meeting lasted, and more.. Turn on the Allow attendance reporttoggle to generate, view, and download attendance reports.
Applies To:
Microsoft Teams
Filter websites and searches using Microsoft Family Safety
Establishing internet boundaries is an important way to protect yourself and your family from inappropriate web content. Microsoft Family Safety web and search filters work across any Windows, Xbox and mobile device that has the Microsoft Edge browser and Family Safety apps installed.
Applies To:
Microsoft Family Safety
Outlook 中的邮箱存储限制 - Microsoft 支持
Outlook 帐户每个邮箱最多可以有 100GB 的存储空间， (Exchange Online邮箱存储限制) 。管理员可以减少每个用户或全局的最大邮箱大小，有关详细信息，请参阅：如何在 Microsoft 365 环境中设置Exchange Online邮箱大小和限制。 “超出配额，你的帐户超出配额限制”
Applies To:
Outlook Web App for Office 365, Outlook Web App for Office 365 Small Business, Outlook.com, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019, Outlook Web App
PowerPoint 无响应、挂起或冻结 - Microsoft 支持
安装最新更新. 安装任何重要、推荐和可选更新通常可以替换过期的文件并修复漏洞，从而解决问题。 若要安装最新的 Office 更新，请参阅 安装 Office 更新。. 还可随时尝试手动获取更新。 如果安装最新的 Office 更新无法解决问题，请继续执行下一步。
Applies To:
PowerPoint for Microsoft 365, PowerPoint 2021, PowerPoint 2019, PowerPoint 2016
修复 Microsoft Store 应用出现的问题 - Microsoft 支持
另请参阅. 如果找不到 Microsoft Store，请参阅 在 Windows 10 中查找 Microsoft Store 时遇到问题的疑难解答。. 如果在启动 Microsoft Store 时遇到问题，请参阅 Microsoft Store 无法启动。. 如果可以启动 Microsoft Store，但只是在查找或安装应用时遇到问题，请参阅 我无法从 Microsoft Store 找到或安装应用。
在 Microsoft Store 中更改所在国家或地区 - Microsoft 支持
我们建议仅当迁至新的国家或地区长期居住时才更改所在地。 这一点很重要，因为在一个区域中获取的项可能无法在另一个区域中工作。. 其中包括： Xbox Live Gold 和 Xbox Game Pass
在 Windows 中管理用户帐户 - Microsoft 支持
Windows 允许添加多个用户帐户以使用同一设备，使每个用户都有自己的设置、文档和应用程序。 例如，家长可以拥有自己的具有管理权限的帐户来管理设置和安装软件，而孩子可以拥有启用了家长控制的标准帐户来监视和限制其使用情况。
在 Windows 11 中使用相机设置管理相机 - Microsoft 支持
注意: 某些相机将不会显示在“相机设置”页中。其中包括用于 Windows Hello 人脸身份验证的红外线 (IR) 摄像头、使用 DirectShow 技术（如 DSLR 或运动相机制造商提供的便于将其设备用作网络摄像头的许多应用）的相机，以及不由 Windows 管理的专有相机，例如工业相机和许多网络摄像头。
How to add an email address or phone number to your Microsoft account
Tip: Creating an Outlook.com email address gives you a brand-new email address that is attached to your existing Microsoft account.This makes several benefits and features available to you within the Microsoft suite of products, particularly within Outlook. You might want to do this if your Microsoft account is not currently tied to an Outlook.com email address.