Learn how to troubleshoot Windows Media Player errors. Explore resources for general help with Windows Media Player.

Learn how to download, install, and configure additional language packs for various versions of Windows.

Change your profile photo in Outlook.com. At the top of the page, select your profile picture.

如果你收到有关 Microsoft 帐户上异常活动的电子邮件，或者你担心其他人可能使用了你的帐户，请转到“最近活动”页。 你将看到你的 Microsoft 帐户在过去 30 天内的登录时间，以及任何特定于设备或应用的信息。

Learn how to troubleshoot and use the clipboard in Windows to paste multiple items, pin items, and sync your clipboard to the cloud.

The MAXIFS function returns the maximum value among cells specified by a given set of conditions or criteria: numbers, dates, text, etc. This feature is available on Windows or Mac if you have Office 2019, or if you have a Microsoft 365 subscription. If you are a Microsoft 365 subscriber, make sure you have the latest version of Office.

Get answers to common questions about Windows 11 and Windows 10 in S mode.

Training: Get up and running quickly with this Viva Engage Quick Start.

If you already have an account signed in to OneDrive and you want to add or remove another account, you’ll do that in OneDrive Settings.

你的备用电子邮件地址是否以 @outlook.com、@hotmail.com、@live.com 或 @msn.com 结尾？ 如果是，则你正使用一个 Microsoft 帐户验证另一个 Microsoft 帐户。