The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.

Learn how to fix problems signing into your Microsoft account. Resolve password verification, locked account, and other Microsoft account login issues.

Report a scam. If you feel like you’ve been the target of a technical support scam, you can help Microsoft stop cybercriminals by reporting it. Learn more about avoiding technical support scams.

从 2023 年 8 月 15 日开始：我们将发送 Xbox Game Pass Ultimate 代码，以感谢你参与我们的预览计划 （对于主要和辅助成员），具体取决于主帐户持有者的剩余时间，如下表所述。. 你的共享 Friends & Family 订阅必须在 2023 年 8 月 15 日处于活动状态，才符合条件。. 若要 ...

Get help and support, whether you're shopping now or need help with a past purchase. Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Discusses how to remove viruses, spyware, rogue software, or malware using Microsoft Security Essentials, Microsoft Safety Scanner and Microsoft Defender Offline.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

If you get an error code while downloading and installing Windows updates, the Update Troubleshooter can help resolve the problem. Select Start > Settings > System > Troubleshoot > Other troubleshooters. Next, under Most frequent, select Windows Update > Run.

Check if you have an Exchange account in classic Outlook. How to recall and/or replace an email message you sent by using Microsoft 365 and your built-in Exchange Server account.