断开设备与 Microsoft Store 的链接. 如果无法从 Microsoft Store 中下载内容，则你可能已达到了设备限制。 通过删除不使用的设备或者不再有权访问的设备来管理你的限制。

准备好安装了吗？ 在开始之前，请确保电脑或 Mac 满足 系统要求。. 如果你已兑换产品密钥，只需重新安装应用，或者知道你已通过工作或学校分配了许可证，则可以跳到登录部分 ，下载并安装 Microsoft 365 或 Office。 但是，如果是 首次 安装 Microsoft 365 或 Office，可能需要先执行一些步骤。

Last reviewed December 2nd, 2022. Microsoft 365 Groups is a service that works with the Microsoft 365 tools you use already so you can collaborate with your teammates when writing documents, creating spreadsheets, working on project plans, scheduling meetings, or sending email.

Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

Advanced email security. As a Microsoft 365 subscriber, you get enhanced security tools that help protect your inbox from phishing and malware.

向量形式. LOOKUP 的向量形式在单行区域或单列区域（称为“向量”）中查找值，然后返回第二个单行区域或单列区域中相同位置的值。. 语法. LOOKUP(lookup_value, lookup_vector, [result_vector]) LOOKUP 函数向量形式语法具有以下参数：. lookup_value 必需。LOOKUP 在第一个向量中搜索的值。

Check here for the known game issues that we're currently tracking and find out what you can do about them.

Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.

Every time you enter payment info on a website, Microsoft Edge will ask you if you want to save the card. Once payment info like credit and debit card numbers are securely stored in the browser, you don’t have to remember and enter this info each time you buy something online.

关闭Microsoft帐户意味着你将无法使用它登录到任何Microsoft产品或服务，包括 Outlook.com 或 Hotmail、OneDrive、Xbox、Skype、Office 或 Microsoft 365、Rewards 和 Microsoft 认证。