Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

获取 Microsoft Edge 的帮助和支持。 查找 Microsoft Edge 支持内容、操作方法文章、教程等。

Learn how to use the Activation troubleshooter to resolve common activation issues in Windows.

This article describes step for users to allow all Web sites in the Internet zone to run JavaScript in Internet Explorer, Chrome, and Firefox.

获取有关在 Outlook 网页版中登录、更改密码、创建和发送邮件、删除邮件、创建文件夹等的帮助。

在 Outlook 中，有时待发邮件会滞留在发件箱中，无法发送出去。 了解使之发送出去的一些方法。

Learn how to recover a hacked or compromised account, what to do next, and how to prevent your account from being compromised in the future.

了解在 Windows 中查找 BitLocker 恢复密钥的不同方法，并了解如何在系统上激活 BitLocker。

从确保设备可以运行 Windows 11 到备份文件和安装 Windows 11，了解如何为 Windows 11 升级做好准备。

Learn about certificate errors in Internet Explorer: what they are, what they mean, and what you should do about them.