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.

Discusses the release of the Malicious Software Removal Tool (MSRT) to help remove specific prevalent malicious software from Windows-based computers.

Summary. Microsoft Update Health Tools is offered to devices through Windows Update as update KB4023057. This update is applicable for both Windows consumer and commercial devices, with a slightly different purpose and functionality.

Rename your device to make it easier to identify if if you use multiple computers with your Microsoft account.

Learn about what effect closing a Microsoft account might have on your other apps and services.

Sign in to account.microsoft.com, then select Order History on your Rewards page.

To play a recorded meeting in Microsoft Teams, go to the chat history of the meeting and click Play.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Microsoft's products and services work best if you use the same language and region across all your devices, and in all of your app and Store settings.