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

To start enjoying Microsoft Rewards, you just need a Microsoft account.It connects you to all things Microsoft with one simple logon. Sign up now by going to Microsoft Rewards.Select Sign up for free and follow the steps to create a Microsoft account.. If you already have a Microsoft account, great!

固定或取消固定通道. 固定的频道会保留在列表的顶部，因此你不必追查它们。 若要固定频道，请转到频道名称，并将鼠标悬停在右上角，选择“ 更多选项 。 然后单击“固定 ”，确保频道保留在列表顶部。 如果改变主意，只需再次选择“ 更多选项 ”，然后单击“Unpin ”。

警告: 如果升级到 Windows 后不到 10 天，则以前的 Windows 版本将列为可以删除的系统文件。可以将其删除，但请记住，你将删除 Windows.old 文件夹，其中包含文件，可让你选择返回到以前版本的 Windows。

Note: You might not be able to change the power mode when a custom power plan is selected.If you can’t set the power mode in Power & battery settings, open Control Panel, select System and Security > Power Options, then choose a Balanced power plan.

支出限制是一项绝佳功能，让家庭成员可以自由地在 Microsoft Store 中购物，而不会过度支出。 向家庭成员帐户添加资金，让他们能够在预算内购买到想要的内容。 他们还可以使用礼品卡自由购物。

1. Sign in with your Microsoft account. You will be prompted to Sign in with Microsoft account. If you have an existing Microsoft account on your mobile device then you will be asked to confirm your account, then click Continue.. If you don't have an existing Microsoft account on your mobile device then you will be asked to sign into your account or create a new one, then click Continue.

这些说明能帮助解决激活问题，方法是从 Mac 中删除所有 Office 许可证文件。 例如，如果以前安装了一次性购买的 Office for Mac，并且已转换到 Microsoft 365，你可能不会看到订阅功能，因为你的 Office 副本仍然使用的是旧许可证。

When you get a new device and start up Windows 10 for the first time, the antivirus protection that comes installed with the device is your default security app.

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2