Want to add a padlock to your email messages? You can use S/MIME in Outlook on the web to increase the security of messages. A digitally encrypted message can only be opened by recipients who have the correct key. A digital signature assures recipients that the message hasn’t been tampered with.

someone@example.com-您是否正在寻找电子邮件地址？. 在 Outlook 中查找电子邮件地址？. 使用 "搜索通讯簿" 框。.

If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.

在Microsoft Edge中打开网页。. 浏览器将检测页面的语言，并显示一个菜单，要求你确认是否要翻译页面。. 请执行以下任一操作：. 在 “翻译为 ”下拉列表中，选择要将页面翻译成的语言。. 默认值是为Microsoft Edge设置的语言。. 若要翻译页面，请单击 “翻译 ...

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 ...

Check the Xbox services, games, and apps for any service outages.

Xbox Accessibility Insider League FAQ. Learn about the tools and features that Xbox provides in our quest to make gaming accessible to players of all abilities.

由于2020后不再支持 Flash，因此默认情况下，在新的 Microsoft Edge 中将其关闭。. 其他浏览器（如 Google Chrome 、 Mozilla 和 Safari ）也在同一时间范围内计划删除 Adobe Flash。. 有关 Flash 支持结束的详细信息，请参阅 2020 年12月31日的 Adobe Flash 支持终止 。. 以下介绍了 ...

The Xbox 360 system cache stores such items as game updates, system update installation packages, and gamer pictures of your friends. You can often resolve issues with your Xbox 360 by clearing the system cache.

Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.