Learn what you can do if you're not receiving account aign-in verification codes.

Find out how to set up and manage your security info and verification codes for your Microsoft account, and troubleshoot common issues.

Use Find my device to locate and lock your lost or stolen Windows devices.

Microsoft Rewards has two status tiers: Level 1 and Level 2. Earn and keep Level 2 status by reaching 500 Microsoft Rewards points each month - no matter how you earn points, they all count toward your status.

Learn how to find and install digital downloads from Microsoft Store. See instructions to download and install software directly purchased from Microsoft.

Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

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.

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

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

如何激活预安装在新 Windows 10 计算机上的 Office 或使用新的产品密钥。