Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

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Notes: If you know your password, but just want to change it, go to account.microsoft.com Security tab, and select Change my password. If you know your username and password but they have stopped working, read My username and password have stopped working.

我可以重新分发语言包吗？ 如果你代表政府或政府机关、政府隶属机关或政府扶持的文化或语言委员会或机构，或认可的教育机构，你可以按原样将从 Microsoft 收到的包重新分发给具有有效软件许可的用户。

Windows devices may get new functionality at different times as Microsoft delivers non-security updates, fixes, improvements, and enhancements via several servicing technologies—including controlled feature rollout (CFR).. Windows will let you know if you need to restart your device to complete an update, and you can choose a time that works best for you to complete that update.

Summary. This update installs the PC Health Check application onto Windows 10,version 20H2 and later devices. However, we will not install PC Health Check on Windows 11 devices.

An upgrade differs from an update in that it moves your PC from a previous version of Windows—such as Windows 10—to Windows 11. This FAQ is intended to answer questions about upgrading to Windows 11.

IMPORTANT This update will not be offered if your Windows Recovery Environment (WinRE) meets any of the following conditions: If the WinRE recovery partition does not have sufficient free space, see the NOTE in the "Summary" section. The note provides instructions about how to increase the available free space in the WinRE recovery partition.

这些步骤仅适用于 Office 专业增强版、Visio 专业版 或 Project Professional。 步骤 1：启动 Office 应用，例如 Word、Project 或 Visio，具体取决于你的购买。. 步骤 2：在“登录以设置 Office”窗口中，选择“我不想登录或创建帐户”（窗口底部的小型链接）。. 步骤 3：输入 Office 产品密钥，省略连字符。

Notes: By default, all searches are AND searches. You must capitalize the NOT and OR operators. Otherwise, Bing will ignore them as stop words, which are commonly occurring words and numbers that are omitted to speed a full-text search.