Find out more about Xbox digital codes and gift cards, and how to troubleshoot issues redeeming content.

Manually download a language for Cortana speech. Go back to Settings > Time & language > Language, select your new language, and then use the up-arrow button to move it to the top of the list and make it the default.

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

Get help with Skype for Business. Skype for Business 2016 Training. Video: What is Skype for Business? Video: Download and install Skype for Business (video)

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

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

使用双重验证时，Microsoft Authenticator 应用可帮助你登录帐户。

Find out how to change your Xbox gamertag through a browser, on your Xbox console, or your Windows device.

了解如何从 Windows 10 家庭版升级到 Windows 10 专业版或从 Windows 11 家庭版升级到 Windows 11 专业版，包括如何使用有效产品密钥或 Microsoft Store。

Pick a team and channel. A team is a collection of people, conversations, files, and tools — all in one place. A channel is a discussion in a team, dedicated to a department, project, or topic.. The best way to get familiar with teams and channels is to pick a team and channel and start exploring! Select Teams on the left side of the app and then pick a team.