Change two-step verification settings; Common problems with two-step verification for work or school accounts; Manage app passwords for two-step verification

获取有关 Windows 安全的帮助; 在 Microsoft Edge 中查看和删除浏览器历史记录; 删除和管理 Cookie; 重新安装 Windows 时安全移除有价值的内容

Learn more about what background apps are in Windows and how to turn them off when you're not using them.

Learn how to redeem your Microsoft Rewards points for a huge variety of great products and sweepstakes.

Microsoft made a commitment to provide 10 years of product support for Windows 7 when it was released on October 22, 2009. This 10-year period has now ended, and Microsoft has discontinued Windows 7 support so that we can focus our investment on supporting newer technologies and great new experiences.

Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.

Découvrez comment installer Office 2013 sur PC ou Office pour Mac 2011.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

Find out what steps you can take if an incompatible driver in preventing you from turning on the Memory integrity setting in Windows Security.

Set up the Microsoft Authenticator app from the Security info page. Depending on your organization’s settings, you might be able to use an authentication app as one of your security info methods.