Find your product key to activate Windows. A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

To change your current theme in Outlook or Access, you can either switch to a different one or create a new theme altogether.

Learn how to track shipping and pending orders from Microsoft Store. You can use account.microsoft.com to track orders from Microsoft Store.

Learn how to manage background activity for apps to help save battery power in Windows.

The Microsoft Teams web app works for most desktop browsers, including Chrome, Firefox, and Internet Explorer.

了解如何使用 PIN、面部识别或指纹通过 Windows Hello 登录电脑。

Learn how to update your Xbox console offline. Unplug the network cable if you're using a wired network connection. Power off your console, and then unplug the power cord to ensure that the console is completely powered off.

Use the multi-item Office clipboard to copy and paste text or images in and out of your documents.

Instructions for opening attachments or saving them to your computer or cloud storage.

Microsoft Rewards offers and redemption catalogs vary across regions. The following is a list of countries/regions in which Microsoft Rewards is currently available: